Was there a book attached? Or is it like check for spelling or something? If a book was attached it’s prolly something in the text that u have to prove that that’s correct or something!
Answer:
I think the answer would be cruel. cruel is often used as an oppressive term so I would assume that cruel would be the obvious choice.
You ask yourself, "what is the main idea?" "what is the story about?". The theme is like the things that the story surrounds.