Final answer:
New World monkeys are characterized by having prehensile tails, an adaptation for their arboreal lifestyle.
Step-by-step explanation:
Unlike primates found in Asia and Africa, new world monkeys have prehensile tails. This feature is indicative of their arboreal lifestyle, which necessitates adaptations for climbing and maneuvering through the trees. New World monkeys, also known as Platyrrhini, are distinct from Old World monkeys (Catarrhini) in having broad noses and a tail that can grasp or hold objects. While both New World and Old World monkeys have opposable thumbs and binocular vision, it is the presence of a prehensile tail that is particularly characteristic of most New World monkey species.