The answer is D. Baboon.
A kangaroo, an orang-utan, and a gorilla are all great apes. Baboons are not great apes, but are instead Old World monkeys.
Great apes are a group of primates that includes gorillas, chimpanzees, orangutans, and bonobos. They are characterized by their large size, long arms, and opposable thumbs. Great apes are found in Africa and Asia.
Old World monkeys are a group of primates that includes baboons, macaques, and langurs. They are characterized by their short tails, forward-facing eyes, and lack of opposable thumbs. Old World monkeys are found in Africa and Asia.
Baboon is a type of monkey that is found in Africa. They are characterized by their large size, long tails, and dog-like faces. Baboons are social animals that live in groups of up to 100 individuals. They are omnivores and eat a variety of plants and animals.