Courage is a virtue seems like the answer, but I haven’t read the book. Though, I’m making an education guess because it takes courage to go to the moon.
The correct answer is C. The cultural beliefs of the characters. Cultural beliefs are always related to a certain period in time and keep changing. This is why we can find out what the historical context is by analyzing what the society values. The other answers are mostly universal.
B. All of these
Because you need to think of the central point, you need to know how long to make your essay, and you need to plan out your topic sentences and supporting details.
If you are telling us to revise the sentence, one error is that there is a double negative. 'not' and 'un' would cancel each other, and the revised sentence 'I wouldn't say he's the nicest guy around, but I've seen him behave kindly before.'