I think it would be A) bought
In "The Prince," Machiavelli makes reference to making use of auxiliary armies, either allied or mercenary forces. He suggests that demanding extra forces to provide support to an own army is always risky. The reason is, in victory, the auxiliary army is owed a favor or might act against the party that hires it. Likewise, if the battle is lost, then the employer loses as well.
He wanted to know gatsby better. After all he is mysterious and gatsby has been intriguing to him.
If 'whose name was Rip Van Winkle' is underlined, then this is B, a subordinate clause, meaning that it cannot exist outside the main clause, because it is dependent, incomplete.
