Hi stacyzsong!
For this type of question, it can be helpful to put an initial for each of the speakers next to contender answer choices. Then ask whether the person would agree or disagree with the answer choice, or put a question mark to denote that one doesn't know one way or another.
So for answer choice (D), "The mayor will not get her road repair proposal passed," we'd have:
D: Disagree
E: Agree
Durham thinks that the mayor will get the road repair proposal passed (and will also agree to a tax increase). Espinoza, by contrast, states that the "mayor will not get her road proposal passed." Since the question stem asks us for what they'd agree about, we can eliminate answer choice (D).
Applying the same test to answer choice (B)--"The only way that the city council will agree to pass the mayor’s road repair proposal is if she agrees to a tax increase"--results in:
D: Agree
E: Agree
Durham states that the tax increase is the "only way" that the city council will agree to the road repair proposal. Espinoza does not dispute this but rather argues that the mayor's priority is not to increase taxes--given this priority, Espinoza concludes that the "mayor will not get her road repair proposal passed."