What are the exerpts above you dont have those
The best answer would be D.
Deflation is the erosion by wind of loose material from flat dry areas.
Answer:
a
Explanation:
The background information given to the reader.
The exposition represents the characters and the places.
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.