Arrogant due to his fortune and growing up around similar characters. Snobbish due to mistreatment perhaps from a close friend in his childhood. And above all, honest, which may be a product of good upbringing and certainly insight on his true character.
A complex sentence has one dependent clause and one independent clause.
Here's some examples;
1. After twenty years, he still had feelings for her.
2. Because my coffee was too cold, I heated it in the microwave.
I think your answer will be C.
Answer:
must,have,do not,cannot, have to