In “The Most Dangerous Game,” Zaroff is defeated by Rainsford's hunting skills and also by his

A. own overconfidence.
B. loss of Ivan.
C. inattention to detail.
D. inferior hunting skills.

A. own overconfidence.

The correct answer is:

A. own overconfidence.

In "The Most Dangerous Game," Zaroff is defeated by Rainsford's hunting skills, but more importantly, by his own overconfidence. Despite being an experienced hunter, Zaroff underestimates Rainsford's resourcefulness and ability to outwit him. Zaroff's confidence in his own abilities leads to his downfall.