Answer:
Im pretty sure it's "Most of her books—including the newest titles—are nonfiction."
Explanation:
The best thesis statement would be:
A. Schools should encourage volunteering because it reduces stress, promotes personal growth, and has a positive effect on society.
This is the best because it provides the topic "Schools should encourage volunteering" and then it goes on to provide reasons for this that will most likely be described in the rest of the paper.
Hope this helps!
C. The main idea is the primary point of a piece of writing :)
The best answer among the following choices would be the second option B) because C) and D) are normal sentences while B) is complex and A) is fine but needs to replace ''has a tendency'' with ''tends''.