Final answer:
Anthropologists study monkeys and apes to gain insights into human behavior, intelligence, technology, and culture. Primates' common ancestry with humans allows for valuable comparisons. Studying primates can help understand human tool-making skills, social behaviors, and the effects of habitat loss on primate populations.
Step-by-step explanation:
Anthropologists study monkeys and apes to better understand human behavior because primates share a common ancestry with humans and exhibit similar behaviors. By studying nonhuman primates, anthropologists can gain insights into the origins of human intelligence, technology, and culture. For example, studying chimpanzees can provide information about human tool-making skills and social behaviors. Additionally, studying primates can help researchers understand the impact of habitat loss and other threats on primate populations.