Question

what is the gist of the part of the passage in the box? wildlife biologists are studying cougars and other animals that cross busy highways because they are removing/studying/protecting them.

Explanation:

The text states that wildlife biologists are engaged in an activity related to cougars and other animals that cross busy highways. The key - word in the sentence is "studying", which indicates the main action of the biologists.

Answer:

Wildlife biologists are studying cougars and other animals that cross busy highways.