In Country E, car sales have dropped significantly in the past 8 years. During this time, public awareness about the ecology and the serious harm caused by fossil fuel-burning vehicles, amongst other things, has experienced a tremendous increase. This heightened level of public awareness, therefore, is the reason for the drop in car sales.
Which of the following would it be most useful to establish in order to evaluate the argument?
Scientists have modified feed corn genetically, increasing its resistance to insect pests. Farmers who tried out the genetically modified corn last season applied less insecticide to their corn fields and still got yields comparable to those they would have gotten with ordinary corn. Ordinary corn seed, however, costs less, and what these farmers saved on insecticide rarely exceeded their extra costs for seed. Therefore, for most feed-corn farmers, switching to genetically modified seed would be unlikely to increase profits.
Which of the following would it be most useful to know in order to evaluate the argument?
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If there is an oil-supply disruption resulting in higher international oil prices, domestic oil prices in open-market countries such as the United States will rise as well, whether such countries import all or none of their oil.
If the statement in the passage concerning oil-supply disruptions is true, which of the following policies in an open-market nation is most likely to reduce the long-term economic impact on that nation of sharp and unexpected increases in international oil prices?
Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who live especially near the lines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.
Which of the following would it be most useful to establish in order to evaluate the public health official's argument?
Finance Secretary of MelaniA. Melania's Beef Importation Board, the quality control agency for imported Beef rejects about 3 % of the Beef that it inspects. As the maintenance costs of the agency far outweigh the health benefits of rejecting 3% beef and associated savings, the agency is drain on the state's exchequer.
Which of the following questions would be most useful in evaluating the lawmaker's argument?
Urban air contains more sulfur dioxide than does rural air, and plants in cities typically grow more slowly than do plants in rural areas. In an experiment to see how much of the difference in growth is due to sulfur dioxide, classes in an urban and a rural school grew plants in greenhouse at their schools and filtered the greenhouse air to eliminate sulfur dioxide. Plants in the urban greenhouse grew more slowly than those in the rural greenhouse.
Which of the following, if true, would it be most important to take into account in evaluating the result?
Because learned patterns of behavior, such as the association of a green light with “go” or the expectation that switches will flip up for “on,” become deeply ingrained, designers should make allowances for that fact, in order not to produce machines that are inefficient or dangerous.
In which one of the following situations is the principle expressed most clearly violated?
Although some nutritional facts about soft drinks are listed on their labels, exact caffeine content is not. Listing exact caffeine content would make it easier to limit, but not eliminate, one’s caffeine intake. If it became easier for people to limit, but not eliminate, their caffeine intake, many people would do so, which would improve their health.
If all the statements above are true, which one of the following must be true?
Sam: Mountain lions, a protected species, are preying on bighorn sheep, another protected species. We must let nature take its course and hope the bighorns survive.
Meli: Nonsense. We must do what we can to ensure the survival of the bighorn, even if that means limiting the mountain lion population.
Which one of the following is a point of disagreement between Meli and Sam?
Lately many people in a certain post-communist country have decided to emigrate for economic reasons. The people who want to leave the county in search of a job or a better life are those who have no money, or who know many foreign languages.
Of the following people, who is LEAST likely to emigrate?