Displease comfort
Deny offer
Force volunteer
I’m not positive on the others though, sry
C is the answer you are looking for. A common idea isn't a moral, the generalization is the Main Idea, but not quite the moral. The thought of the characters almost never have the moral in them. Therefore, C is your answer.
The main idea is found by looking at the general idea of the text you are reading, what is it about? What does it mention?
