In general zaroff’s opinion, what makes humans the most challenging game to hunt?
they are faster than most animals
they have reason
they can shoot a gun
they are stronger than most animals

they have reason

Explanation:

In "Most Dangerous Game" General Zaroff is a man in love with hunting. However, General Zaroff doesn't like to hunt any animals, he actually likes to hunt humans in a sick game, but very exciting for him. Zaroff, believes that hunting humans is much more exciting and exciting than hunting irrational animals, because humans are right, that is, humans reason and can be a challenging opponent, who in desperation to save his life, manages to develop strategies and plans that make hunting an insane and surprising psychological challenge.

that is the way of a cheater and cheaters get nothing but bad grades and in trouble.