I do believe the answer is a
C) idealistic
In order to fit into this blank of the sentence, the word needed to be an adjective--the adjective is used to describe Sarah's views. "idealistic" is an adjective, therefore this is the proper word form to fit into the overall sentence.
He gives a kind of fair chance because he provides his opponent with a hunting knife, training, and reliable clothes, while all Zaroff has is a 'tiny little' hand gun. Although, once he is up against Rainsford, Zaroff begins to cheat at his own game by bringing out his bodyguard and his pack or dogs into the hunting grounds with him.
