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When I was solving this question, I too hesitated to pick either choice (B vs D.) I picked D) over B) at the end because D) directly addresses the issue at hand: Commuters kept throwing trash on the station platform. D) goes by addressing that if there is NO "trash on platform" on sight, commuters will NOT "throw trash on platform." B), on the other hand, addresses the follow-up plan, which doesn't explicitly counter outgoing mayor's argument (the cleanup plan - first plan - will keep the station clean.) The station could be clean whenever the cleaning schedule is due but... how frequent is the cleaning schedule? more important, would that deteriorate trashes laid by the commuters? This choice doesn't address it. That's how I picked D) over B).
miag
hi Bunuel bb, can someone elaborate a bit more on why B) is wrong? I am still confused between B) vs D) even after going through the reasoning. I understand the logic for D) but isnt there some assumption involved in terms of connection to the plan's effectiveness? How do we decide in such questions if one should focus on the plan's effectiveness or the long-term bit?
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