What is a distinguishing feature of Omomyidae?

The distinguishing feature of Omomyidae is that they are specialized leapers with teeth adapted for eating insects and soft fruits. This adaptation is significant as it highlights their ecological niche and feeding habits, which are critical to understanding their evolutionary strategies. The physical adaptations of their teeth suggest a diet that includes insects, which requires a different dental morphology compared to species that consume harder materials. Their leaping ability is also an adaptation to navigate through their environment efficiently, likely aiding in foraging and evading predators.

Other options do not accurately represent the characteristics of Omomyidae. For instance, living in water, being large terrestrial animals, or dwelling primarily in dense forest canopies do not align with the known behavioral or physical traits of this family of primates. Each of these incorrect selections reflects groups with distinct adaptations and behaviors that differ from those of Omomyidae, reinforcing the correct answer's relevance.