The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
I think the answer would be A. Her fear of being thought anti-revolutionary. At this time, being anti-revolutionary could get someone moved out of the country, and since Niu Fen was a loud-mouth, she could be able to tell someone about it. Especially since it reads, "<span>I don't know whether Niu Fen reported Wenli to the school leaders." </span>
Answer:
B. R Simplot invented an efficient way to manufacture frozen fries.
I apologize if i'm wrong but i think it might be prose, poetry, drama<span />
