I eliminated A,B, D first because they all would provide evidence that the human rights group would want to strengthen their argument. In narrowing it down between C & E, I think the answer is E because it seems like it is the only question that provides information that would be irrelevant to the human rights group whereas knowing the answer to C would also provide evidence (if other companies are raising wages, there is support for Championship to do the same) that could be helpful to the group.

VERITAS PREP OFFICIAL EXPLANATION

This question is a type of “Most Useful to Know” that instead asks which answer choice would be the “Least Useful to Know?” The conclusion you are evaluating is whether or not calling for a boycott would lead to higher wages for the employees of Mercury Sports Shoes? The group plans to boycott Champion Sports Apparel, which is owned by the same conglomerate as Mercury Shoes. So the question really is, will boycotting another brand owned by the conglomerate exert more pressure on Mercury Shoes?

Any answer choice that is useful to know can be eliminated. Choice A is useful to know since a boycott is meant to generate revenue losses and the impact of those losses could determine the success of the boycott. Choice B is useful to know since the availability of substitute products is always an important aspect of a boycott. It is easier to boycott butter – since butter substitutes are available – than it is to boycott gasoline. Choice C is relevant because if other companies have increased wages it will be easier to convince Mercury Shoes to do so. This is a tricky one, but it is more relevant than choice E. Choice D is clearly relevant since it asks whether this strategy has succeeded in the past. Choice E is the correct answer since it is not relevant to the conclusion. What if other conglomerates do own shoe as well as apparel companies. How would this impact the success of the boycott? This is least relevant.
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