What characteristic is typical of arboreal organisms?

Arboreal organisms are specifically adapted to live in trees. A typical characteristic of these organisms is their physical adaptations that facilitate climbing and moving in an elevated habitat. These adaptations may include specialized limbs, such as long, strong limbs or prehensile tails, which help them navigate the various structures of trees and effectively access food sources, escape predators, or find mates.

The other options describe habitats or behaviors that do not align with arboreal life. Living underground pertains to fossorial organisms, while flying at night relates to certain nocturnal species, and inhabiting aquatic environments describes aquatic organisms. These distinctions reinforce the unique adaptations that characterize arboreal species and why climbing adaptations are essential for their survival and lifestyle.