I would say D. because all of the others are basically answering the entirety of the speech. If you would discuss ways to increase the literacy rates in the U.S. you would need to go over it last after you explain why the U.S. is so illiterate.
He wanted to invent legends and a mythology that would become part of the culture of England.
Hamlet was who they agreed they must tell about the ghost
Douglass didn't grieve more when he learned that his mother had died because he had spent very little time with his mother.
He didn't manage to bond with her, and that is why her death did not strike him as sad as it would if they had been closer.