Answer:
The Cossack was the cat; he was the mouse. Then it was that Rainsford knew the full meaning of terror.
Step-by-step explanation:
The detail from the excerpt of "The Most Dangerous Game" that best supports the idea that Rainford experiences the fear of a hunted animal while in the jungle is this one. Rainsford feels like a mouse being hunted by a cat. This detail explicitly states that he feels terror. It captures both the terror and feeling like a hunted animal.