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Smoking within a month of the study’s start were

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Unformatted text preview: smoking within a month of the study’s start were four times as likely to be depressed at the study’s end than those who did not begin smoking. Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers. 19 Which of the following, if true, most strengthens the argument? A. Participants who were depressed at the study’s start were no more likely to be smokers at the study’s end than those who were not depressed. B. Participants who began smoking within a month of the study’s start were no more likely than those who began midway through to have quit smoking by the study’s end. C. Few, if any, of the participants in the study were friends or relatives of other participants. D. Some participants entered and emerged from a period of depression within the year of the study. E. The researchers did not track use of alcohol by the teenagers. Answer: ------------------------------------------------------------------------------------------------------------ Q38: In January of last year the Moviemania chain of movie theaters started propping its popcorn in canola oil, instead of the less healthful coconut oil that it had been using until then. Now Moviemania is planning to switch back, saying that the change has hurt popcorn sales. That claim is false, however, since according to Moviemania’s own sales figures, Moviemania sold 5 percent more popcorn last year than in the previous year. Which of the following, if true, most strongly supports the argument against Moviemania’s claim? A. Total sales of all refreshments at Moviemania’s movie theaters increased by less than 5 percent last year. B. Moviemania makes more money on food and beverages sold at its theaters than it does on sales of movie tickets. C. Moviemania’s customers prefer the taste of popcorn popped in coconut oil to that of popcorn popped in canola oil. D. Total attendance at Moviemania’s movie theaters was more than 20 percent higher last year than the year before. E. The year before last, Moviemania experienced a 10 percent increase in popcorn sales over the previous year. Answer: ------------------------------------------------------------------------------------------------------------ Q39: Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just over 33 percent . A. while in Germany it is just over 33 percent B. compared to Germany, which uses just over 33 percent C. whereas nuclear power accounts for just over 33 percent of the energy produced in Germany D. whereas just over 33 percent of the energy comes from nuclear power in Germany E. compared with the energy from nuclear power in Germany, where it is just over 20 33 percent Answer: ------------------------------------------------------------------------------------------------------------ Q40: Agricultural societies cannot exist without staple crops. Several food plants, such as kola and okra, are known to have been domesticated in western Africa, but they are all supplemental, not staple, foods. supplemental, not staple, foods....
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