What happens if Rainsford refuses to play the game? A.
he is set free

B.
he must swim to a passing boat

C.
Ivan gets him

D.
he lives with Zaroff forever

C.  Ivan gets him.

Explanation:

Richard Connell's "The Most Dangerous Game" is about Sanger Rainsford, a famous hunter who cared less about his prey. But then the tables turned and he became hunted instead of being the hunter, thereby presenting the theme of civilization and savagery, conscience, etc.

After Rainsford reached "Ship Trap Island", he discovered that there lived someone, Colonel Zaroff. But soon, he became aware of the "game" that the colonel likes to hunt. Refusing to be a part of the hunt, he was offered to be either the prey (which leaves him a choice of being free if he survives 3 days being hunted) or be killed anyway by Ivan, the Cossack.

Thus, the correct answer is option C.