Which is the longest primate animal in the world?

A. Gorilla
B. Giraffe
C. Kangaroo
D. None of these

Explanation:

Grauer’s gorilla, the largest great ape in the world, is now listed as critically endangered on the International Union for Conservation of Nature’s “red list” of threatened species. The news came as another famous animal — the giant panda — was taken off the endangered list and placed on the vulnerable list.