Recall we're looking for the answer choice that highlights what Enrique and Cynthia disagree over. The main disagreement in the stimulus is over the course of action that the transit authority should take. Enrique states that the transit authority should continue operating through the year without cutting service or raising fares. Cynthia states that the transit authority shouldn't do this, so this is where they disagree.
(D) says, "the federal government is willing to provide additional funding to the transit authority now"
We know that the federal government isn't providing funding to the transit authority presently. Neither of the speakers appears to dispute this information, so if anything, Enrique and Cynthia would probably agree that the federal government isn't currently willing to provide extra funds. Thus, we can get rid of this choice.
(A) says, "the transit authority should continue operating without cutting service or increasing fares until it has exhausted its funds"
(A) looks great. Based on the stimulus, we know that Enrique would say yes, the transit authority should continue operating without cutting service or increasing fares until it's exhausted its funds. Cynthia would definitely disagree with this.
Hope this helps. Let us know if you have any other questions!