A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.


Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?

  • a)
    In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.

  • b)
    A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.

  • c)
    The population of country has increased by more than 10% since 1990.

  • d)
    Obese people have a shorter life span than other people.

  • e)
    All the participants in the survey were taller than an average citizen of the country   

Correct answer is option 'E'. Can you explain this answer?

GMAT Question

It's a comparison type and generalisation kind CR Argument.
so the natural assumptions just after reading the passage are

what happened in the past is similar to present day survey.that means the measurement criteria has not changed.

survey word is used ,so another assumption will be

The survey sample is representative in both conditions.

so let's go to the choices
A says about fat ,what's the outcome do you know.we are sure it .ans is no I am not sure.so out

B says all the participants are having heigher height than the rest and the conclusion says the BMI MUST HAVE INCREASED IN PASSAGE.AND THIS COUNTERS THE CLAIM,bkz weight increased by 10% and heights of the sample space also increased above the average, but not given how much.and this is point that make the conclusion doubtful bkz the conclusion uses the word MUST increase.a slightest doubt creating but non extensive answer choice can be good strengthener or weakner.

c says nonsense.ha ha
d says obese have short life span so what do with bmi

e says cunning thing :it says major criteria for selection is willingness,now the question is who will have the willingness,and for godsake don't extrapolate to think that only higher weight to lower height people will agree to participate bla bla bla..
Answer is B,based the assumption that the survey sample is representative or its called the specific to generic assumption CR type.

This discussion on A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? is done on EduRev Study Group by GMAT Students. The Questions and Answers of A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? are solved by group of students and teacher of GMAT, which is also the largest student community of GMAT. If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for GMAT on EduRev and even discuss your questions like A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? over here on EduRev! Apart from being the largest GMAT community, EduRev has the largest solved Question bank for GMAT.
This discussion on A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? is done on EduRev Study Group by GMAT Students. The Questions and Answers of A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? are solved by group of students and teacher of GMAT, which is also the largest student community of GMAT. If the answer is not available please wait for a while and a community member will probably answer this soon. You can study other questions, MCQs, videos and tests for GMAT on EduRev and even discuss your questions like A person is considered obese if her BMI i.e. Body Mass Index, a ratio of a person’s weight to square of her height, exceeds a certain number. In 1990, the average BMI of the population was just below the threshold level for obesity. However, in a recent survey conducted, it was found that the average weight was 10% more than that of the population in 1990. Given that there has not been any increase in average height of the population since 1990, the obesity levels in the country must have increased.Which of the following, if true, would cast the strongest doubt on the conclusion drawn above?a)In another survey conducted, it was found that the average fat consumption by individuals in the country has decreased.b)A major criterion for selecting participants in the survey was the willingness of the participants to actively participate in the survey.c)The population of country has increased by more than 10% since 1990.d)Obese people have a shorter life span than other people.e)All the participants in the survey were taller than an average citizen of the country Correct answer is option 'E'. Can you explain this answer? over here on EduRev! Apart from being the largest GMAT community, EduRev has the largest solved Question bank for GMAT.