Critical Reasoning (CR) | Re: Some environmentalists question the prudence of exploiting

correct answer should be B,
E is out because there is no information to make such inference.
C is wrong because of "most"
D is incorrect b/c of "only", enviromentalists in fact give out that "economic costs outweight...."
A is loser because it sounds like a fact, or a conclusion that cannot be inferred from the passage.

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