Drug company manager: Our newest product is just not selling. One way to save it would be a new marketing campaign. This would not guarantee success, but it is product, so we should try it.
What this question is testing
Your task
Find the choice that makes the argument's conclusion less likely to be true.
Common trap
Answers that look negative but attack a claim the argument never relied on.
Winning move
Find the assumption the argument depends on, then pick the choice that undermines it.
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