Choose the correct answer.

Mountain Gorillas
There are currently only about 900 mountain gorillas in the world, and they are one of the rarest animals in Africa. For many people, gorillas are not considered attractive—some say they have ugly faces. It is true that they are dark-colored—black or gray—and they are not as colorful as butterflies.

But they are some of the most interesting animals in the world. If we protect these wonderful creatures, they might become more common again.

If we protect gorillas, they might become _____ again.