The answer is d because bring is a transitive verb
What he means by this is, He is trying to convince Odysseus to leave the lost men behind and get off Circe's island before it is too late.
First off, answer "He is trying to convince the other men to help him kill a cow" is absolutely WRONG. I laughed when I read it, lol.
All of the other answers don't make sense :)
I hope this helped.
The following sentence contains an adverb clause.
This sentence contains two clauses - an independent clause (We moved) and a dependent/subordinate clause (because our house was too small). Given that the second sentence gives us a reason why they moved, it acts as an adverb, which is why it is an adverbial clause.