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Bunuel
­The petrochemical industry claims that chemical waste dumps pose no threat to people living near them. If this is true, then why do they locate the plants in sparsely populated regions? By not locating the chemical dumps in densely populated areas the petrochemical industry tacitly admits that these chemicals are potentially dangerous to the people living nearby.

Which of the following, if true, would most weaken the author's argument?

(A) Funding through the environmental Super Fund to clean up poorly run waste dumps is reserved for rural areas only.

(B) Until chemical dumps are proven 100% safe, it would be imprudent to locate them were they could potentially do the most harm.

(C) Locating the dumps in sparsely populated areas is less expensive and involves less government red tape.

(D) The potential for chemicals to leach into the water table has in the past been underestimated.

(E) People in cities are more likely to sue the industry if their health is harmed by the dumps.
­

Official Explanation



The suppressed false premise of the argument is that, all things being equal, there is no reason to prefer locating the sites in sparsely populated areas. To weaken the argument, we need to show it is not true that all things are equal. In other words, there are advantages other than safety in locating the sites in sparsely populated areas. Choice (C) gives two possible advantages—cost and ease. Hence (C) is the answer
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