Final answer:
Most non-human primates live in tropical rain forests and have adaptations for an arboreal lifestyle. They are mostly found in regions with rich biodiversity like Central and South America, Africa, and South Asia, and face threats from habitat loss.
Step-by-step explanation:
By and large, it is true that most living non-human primates live in tropical rain forests. Non-human primates inhabit diverse forested habitats, such as rain forests, mangrove forests, and mountain forests, and some are partially terrestrial. Species of non-human primates can be found in Central and South America, Africa, and South Asia. They have adapted to a variety of environments, though many species still primarily reside in trees, benefitting from an arboreal lifestyle with traits like opposable thumbs, good vision and mobility which are crucial for survival above the ground. The distribution and habitat choices of these primates, from the smallest lemur to the largest ape, are essential for understanding their behavior and evolution, reflecting the rich biodiversity of these regions. Furthermore, the shrinking of these habitats due to deforestation for agriculture, such as oil palm plantations, poses significant threats to their survival.