Is there more of the reading ?
The answer you are looking for is B, participle.
B. Steven was worried about his driving test.
The reason for that is helped, trimmed, and discussed are all verbs that one can see. Where worried can be disguised even though it is still present.
I hope that made sense.
The answer is D. A and B are the same reworded, and the fact that will be proven is just something to be argued.
Answer: He does this to make the other animals disbelieve what they saw with their own eyes and to believe what he tells them, by gaslighting them and using propaganda, he gets his way