Answer:
The correct option is A) Runs
Rainsford runs after he discovers that the "mancatcher" failed.
Explanation:
He had been on the run from General Zaroff a hunter per excellence who was very great at spotting difficult trails. A bored hunter who had pretty much exhausted his excitement with hunting animals had turned to hunt men. His excuse? animals only had instinct...men had reason and were much more challenging to hunt.
In the story, he challenges and coerces Rainsford into a hunting game where he must either escape or be killed. The General would have lost if by midnight the third day he had not killed or hunted down Rainsford.
Rainsford, on the other hand, was also a great hunter was doing all he could to stay alive. In the sentence above, he had set several traps. The one referenced above is called "Mancatcher". It was meant for the general but failed to get him. It, however, cut down Ivan - one of the General's most valuable assets. Upon discovery that the "mancatcher" missed the general Rainsford jumped down from the tree and ran into the forest.
Cheers!