I think the answer is C but that's off the top of my head.
I would say it is a good book review. You described what happened in detail and I was able to picture the events of the book. However, I would change your answer for the theme. A theme is the moral of a story. For example: "Don't judge a book by its cover," or "All actions have consequences." So find a theme that best fits the story and you'll be good.
"No one has said much about the crash since that time" is the correct way to write in active voice because the subject, "no one," is doing the action.