This question is incomplete. Here's the complete question.
Read: An Editorial: It's time for a nation to return the favor.
What is the “favor” in the editorial’s title?
Answer:
Since the entire country benefited from the economic activities of New Orleans, which could be considered a favor, it´s time for the nation to return that favor by protecting New Orleans of flooding and any possible new hurricane.
Explanation:
This editorial aims to convince the citizens of New Orleans to request Congress for help because they deserve it. Not only because they are part of the country, but also because the nation´s prosperity was boosted by the development of New Orleans. Furthermore, it was the weak levee system built by the federal government that caused the flooding after Hurricane Katrina.
D. All of these ................
There is no passage and answer choices, so it is impossible to answer this question. I apologise.
As for me, when you come across such features as<span> the piano playing, stopping, and playing it can signify that the author of a movie/book wanted to create special mood for the reader, I would say either to frighten a reader or to add a suspense because usually after such twists something unexpected should happen.
Hope youwill find this answer helpful.</span>