This was a tricky one. Got it incorrect in the first attempt, but when I reviewed it, made perfect sense. Here's what we know of the arugment:
Critics' conclusion: Sauk's work lacks aesthetic merit—should be rejected.
Professor's argument: Critics have not successfully demonstrated that the differences between Sauk's political views and Providence's symbolic motifs undermine the subtlety or power of Sauk’s work.
The focus here is not on proving the opposite (that Sauk's work has aesthetic merit) but rather on pointing out that the critics haven't provided sufficient support for their claims. Note that the professor agrees with the fact that Sauk imitates than innovates and holds political views as cited.
(A) The claims made in support of this conclusion are inaccurate.The professor is not saying the critics' claims are inaccurate but rather that they are unproven.
Let's eliminate this. B) Sauk’s work has aesthetic merit.The professor does not claim that Sauk’s work definitively has aesthetic merit, only that the critics have not proven it lacks such merit.
Rule out B. C) These critics are motivated by antipathy toward Sauk’s political ideas.There is no suggestion in the argument that the professor accuses the critics of bias or antipathy.
We can eliminate C. D) The claims made in support of this conclusion have not been shown to be correct.This is close, we know that Professor thinks that it has not been proven that Sauk's work lacks aesthetic merit.
Let's keep this for now. E) The claims made in support of this conclusion have not been shown to be relevant to it.This is the best answer. The professor's argument hinges on the point that the critics’ argument (about Sauk’s use of political ideals or his imitative nature) does not necessarily affect the aesthetic quality of his work, and therefore the critics' claims have not been shown to be relevant to their conclusion about Sauk's lack of aesthetic merit.
The professor’s focus is not just on whether the claims are correct, but also on their relevance to the conclusion about aesthetic merit.
We can rule out D and pick E as the correct answer.