OA soon. What is your opinion on the question quality & format?
I have some issues with the wording of the question. For example, the question asks: "The answer to which of the following questions would be most useful in evaluating the author’s claim
regarding the impact of decreased insourcing in America?" But the author does not make just one claim
. The author makes several claims; the author says the decrease will "hurt America’s competitiveness in basic research and applied technology", that it will have "serious consequences for years to come", and that it will "negatively affect the global outlook and experience of ... American students". So which claim is the question even talking about?
There's a lot of noise in the question, but if you strip away the superfluous language, and focus on the claim about the global outlook of American students, the question tells us:
"The decrease... will ... negatively affect the global outlook ... of ... American students; they will not have the opportunity to learn about foreign cultures directly from members of those cultures."
But it's possible that American students can learn about other cultures in other ways - perhaps by interacting with non-students who are 'members of other cultures'. If that were true, then the decrease in insourcing may not have quite the impact the author suggests. So D is the answer.
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