I’m not sure but it may be B
Hope this helps :)
General Zaroff sees pain and suffering as something pleasurable. He believes that he is a god and that he can surpass anything. He is rich and is one of the most respectable people in the military. He sees hunting as an adrenaline rush. He sought to kill the bigger games just to feed the rush in his system. He will kill animals or humans, he can't tell between animals or humans due to his hunger for hunting.
It is important to understand why an author is writing something. As a reader, knowing the purpose or intent that the writer has for creating the piece of work helps you EVALUATE it better.
I would say that A is the answer. B is irrelevant, C makes the point debatable as it acknowledges that not everyone has access and I feel like A is more important than D to the sort of people who would set questions