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Direction: Read the following passage carefully and answer the questions given below it.
Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.
Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africa hope to resurrect the native subspecies through genetic modification and selective breeding.
Q. Based on the information in the passage, which conclusion can be drawn?
  • a)
    If it were not for the human influence, the quagga would be a surviving species.
  • b)
    DNA analysis can help humans better understand the origins of certain species.
  • c)
    The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.
Correct answer is option 'B'. Can you explain this answer?
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Direction: Read the following passage carefully and answer the questio...


Explanation:


DNA Analysis Can Help Humans Better Understand the Origins of Certain Species:
- The passage mentions that DNA analysis later revealed that the quagga is a subspecies of the zebra, showing how genetic analysis can provide insights into the relationships between different species.
- This indicates that DNA analysis can aid in clarifying the evolutionary history and relationships of various species, helping scientists better understand the origins and classifications of different animals.

Therefore, based on the information provided in the passage, the conclusion that can be drawn is that DNA analysis can indeed help humans better understand the origins of certain species.
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Community Answer
Direction: Read the following passage carefully and answer the questio...
This question asks you to evaluate the statement and identify what conclusions you can draw using the information from the passage.
Choice (A) overstates the passage. Humans were historically responsible for the quagga’s extinction. There’s no way to deduce what would have happened absent human contact. Choice (B) follows from the portion of the passage in which you learn that DNA analysis helped determine that the quagga is a subspecies of the zebra and not a unique species. That’s enough to make the broadly worded choice (B) a viable conclusion.
Choice (C) does not provide a viable answer; it assumes too much information. The passage states that researchers are trying to bring back the extinct quagga, but it doesn’t say how likely these efforts are to be successful, nor does it opine on how much concern extinctions should provoke.
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Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. With which of the following statements would the author of the passage most likely agree?

Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. What does the author designate as the primary reason for the quagga going extinct?

Directions: Answer the questions based on following reading passage.Until recently, many anthropologists assumed that the environment of what is now the southwestern United States shaped the social history and culture of the region’s indigenous peoples. Building on this assumption, archaeologists asserted that adverse environmental conditions and droughts were responsible for the disappearances and migrations of southwestern populations from many sites they once inhabited.However, such deterministic arguments fail to acknowledge that local environmental variability in the Southwest makes generalizing about that environment difficult. To examine the relationship between environmental variation and sociocultural change in the Western Pueblo region of central Arizona, which indigenous tribes have occupied continuously for at least 800 years, a research team recently reconstructed the climatic, vegetational, and erosional cycles of past centuries. The researchers found it impossible to provide a single, generally applicable characterization of environmental conditions for the region. Rather, they found that local areas experienced different patterns of rainfall, wind, and erosion, and that such conditions had prevailed in the Southwest for the last 1,400 years. Rainfall, for example, varied within and between local valley systems, so that even adjacent agricultural fields can produce significantly different yields.The researchers characterized episodes of variation in southwestern environments by frequency: low-frequency environmental processes occur in cycles longer than one human generation, which generally is considered to last about 25 years, and high frequency processes have shorter cycles. The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations. In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly. When the researchers compared sequences of sociocultural change in the Western Pueblo region with episodes of low- and high-frequency environmental variation, however, they found no simple correlation between environmental process and sociocultural change or persistence.Although early Pueblo peoples did protect themselves against environmental risk and uncertainty, they responded variously on different occasions to similar patterns of high frequency climatic and environmental change. The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups. These findings suggest that groups’ adaptive choices depended on cultural and social as well as environmental factors and were flexible strategies rather than uncomplicated reactions to environmental change. Environmental conditions mattered, but they were rarely, if ever, sufficient to account for sociocultural persistence and change. Group size and composition, culture, contact with other groups, and individual choices and actions were— barring catastrophes such as floods or earthquakes—more significant for a population’s survival than were climate and environment.Q. Which of the following findings would most strongly support the assertion made by the archaeologists mentioned in line 3?

Directions: Answer the questions based on following reading passage.Until recently, many anthropologists assumed that the environment of what is now the southwestern United States shaped the social history and culture of the region’s indigenous peoples. Building on this assumption, archaeologists asserted that adverse environmental conditions and droughts were responsible for the disappearances and migrations of southwestern populations from many sites they once inhabited.However, such deterministic arguments fail to acknowledge that local environmental variability in the Southwest makes generalizing about that environment difficult. To examine the relationship between environmental variation and sociocultural change in the Western Pueblo region of central Arizona, which indigenous tribes have occupied continuously for at least 800 years, a research team recently reconstructed the climatic, vegetational, and erosional cycles of past centuries. The researchers found it impossible to provide a single, generally applicable characterization of environmental conditions for the region. Rather, they found that local areas experienced different patterns of rainfall, wind, and erosion, and that such conditions had prevailed in the Southwest for the last 1,400 years. Rainfall, for example, varied within and between local valley systems, so that even adjacent agricultural fields can produce significantly different yields.The researchers characterized episodes of variation in southwestern environments by frequency: low-frequency environmental processes occur in cycles longer than one human generation, which generally is considered to last about 25 years, and high frequency processes have shorter cycles. The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations. In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly. When the researchers compared sequences of sociocultural change in the Western Pueblo region with episodes of low- and high-frequency environmental variation, however, they found no simple correlation between environmental process and sociocultural change or persistence.Although early Pueblo peoples did protect themselves against environmental risk and uncertainty, they responded variously on different occasions to similar patterns of highfrequency climatic and environmental change. The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups. These findings suggest that groups’ adaptive choices depended on cultural and social as well as environmental factors and were flexible strategies rather than uncomplicated reactions to environmental change. Environmental conditions mattered, but they were rarely, if ever, sufficient to account for sociocultural persistence and change. Group size and composition, culture, contact with other groups, and individual choices and actions were— barring catastrophes such as floods or earthquakes—more significant for a population’s survival than were climate and environment.Q. The passage is primarily concerned with

Directions: Answer the questions based on following reading passage.Until recently, many anthropologists assumed that the environment of what is now the southwestern United States shaped the social history and culture of the region’s indigenous peoples. Building on this assumption, archaeologists asserted that adverse environmental conditions and droughts were responsible for the disappearances and migrations of southwestern populations from many sites they once inhabited.However, such deterministic arguments fail to acknowledge that local environmental variability in the Southwest makes generalizing about that environment difficult. To examine the relationship between environmental variation and sociocultural change in the Western Pueblo region of central Arizona, which indigenous tribes have occupied continuously for at least 800 years, a research team recently reconstructed the climatic, vegetational, and erosional cycles of past centuries. The researchers found it impossible to provide a single, generally applicable characterization of environmental conditions for the region. Rather, they found that local areas experienced different patterns of rainfall, wind, and erosion, and that such conditions had prevailed in the Southwest for the last 1,400 years. Rainfall, for example, varied within and between local valley systems, so that even adjacent agricultural fields can produce significantly different yields.The researchers characterized episodes of variation in southwestern environments by frequency: low-frequency environmental processes occur in cycles longer than one human generation, which generally is considered to last about 25 years, and high frequency processes have shorter cycles. The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations. In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly. When the researchers compared sequences of sociocultural change in the Western Pueblo region with episodes of low- and high-frequency environmental variation, however, they found no simple correlation between environmental process and sociocultural change or persistence.Although early Pueblo peoples did protect themselves against environmental risk and uncertainty, they responded variously on different occasions to similar patterns of high frequency climatic and environmental change. The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups. These findings suggest that groups’ adaptive choices depended on cultural and social as well as environmental factors and were flexible strategies rather than uncomplicated reactions to environmental change. Environmental conditions mattered, but they were rarely, if ever, sufficient to account for sociocultural persistence and change. Group size and composition, culture, contact with other groups, and individual choices and actions were— barring catastrophes such as floods or earthquakes—more significant for a population’s survival than were climate and environment.Q. It can be inferred from the passage that which of the following activities is NOT an example of a population responding to high-frequency environmental processes?

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Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer?
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Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? for GRE 2024 is part of GRE preparation. The Question and answers have been prepared according to the GRE exam syllabus. Information about Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GRE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for GRE. Download more important topics, notes, lectures and mock test series for GRE Exam by signing up for free.
Here you can find the meaning of Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Direction: Read the following passage carefully and answer the questions given below it.Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa.Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africahope to resurrect the native subspecies through genetic modification and selective breeding.Q. Based on the information in the passage, which conclusion can be drawn?a)If it were not for the human influence, the quagga would be a surviving species.b)DNA analysis can help humans better understand the origins of certain species.c)The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice GRE tests.
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