Pretty sure the answer is A. The thesis was restated but the ending was not very satisfying and could be better.
The answer is A, cause/effect. Marcia is focusing on how the war started, what ended it, and how it affected America. Cause/effect covers all these things, while the other answers either skip over these things completely or concentrate on only a few.
In Musèe des Beaux Arts by W.H. Auden the people on the ship do nothing after seeing Icarus fall into the sea and the ship continues on its way. Why was that? Because according to the author, when a tragedy happens, human beings are not affected by it if their interests are protected and they have an horizon to pursue.
Get an answer for 'How does the narrator's attitude change towards the raven as "The The Raven makes the speaker remember his lost Lenore, whom he had hoped to Man doth not yield him to theangels, nor unto death utterly, save only.