The sentence that would provide the BEST support for the claim in the paragraph is:
D. A study by the University of Arkansas concluded that visits to a specific art museum had a significant effect on critical thinking skills, historical empathy/understanding, and tolerance of other viewpoints.
The best support for a claim is one that proves the claim to be true beyond all reasonable doubt. Research from a popular university must have gone through fool-proof scrutiny.
So, if this research arrives at the conclusion that art has helped many to develop critical thinking skills which is one of the objectives of college education, then we can agree that it is the best support for the claim. With this in mind, we can conclude that option D is correct.
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