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Q30 which of the following most logically completes

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Q30: Which of the following most logically completes the argument? The irradiation of food kills bacteria and thus retards spoilage. However, it also lowers the nutritional value of many foods. For example, irradiation destroys a significant percentage of whatever vitamin B1 a food may contain. Proponents of irradiation point out that irradiation is no worse in this respect than cooking. However, this fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since _______. A. many of the proponents of irradiation are food distributors who gain from food’s having a longer shelf life B. it is clear that killing bacteria that may be present on food is not the only effect that irradiation has C. cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods D. certain kinds of cooking are, in fact, even more destructive of vitamin B1 than carefully controlled irradiation is E. for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded Answer: ------------------------------------------------------------------------------------------------------------ Q31: Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presented on a tray that bears a credit-card logo. Consumer psychologists hypothesize that simply seeing a credit-card logo makes many credit-card holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available. Which of the following, if true, most strongly supports the psychologists’ interpretation of the studies? 30
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------------------------------------------------------------------------------------------------------------ Q32: Which of the following most logically completes the argument? Although the pesticide TDX has been widely used by fruit growers since the early 1960’s, a regulation in force since 1960 has prohibited sale of fruit on which any TDX residue can be detected. That regulation is about to be replaced by one that allows sale of fruit on which trace amounts of TDX residue are detected. In fact, however, the change will not allow more TDX on fruit than was allowed in the 1960’s, because ______.
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