Final answer:
Rhesus monkeys and gorillas do indeed have stereoscopic vision, which is true and characteristic of primates. Chimpanzees share a closer relationship with humans than with rhesus monkeys. Primates generally have three cones for color vision, contrary to other mammals with fewer cones.
Step-by-step explanation:
The statement that Rhesus monkeys and gorillas have stereoscopic vision is true. Both of these species have eyes that are forward-facing which allows them to see in three dimensions. This is a key trait of primate vision and is critical for activities such as navigating through trees and judging distances.
Regarding the relationship among rhesus monkeys, chimpanzees, and humans, chimpanzees are more closely related to humans than rhesus monkeys (Option D). The evolution of primates has led to humans and apes (including chimpanzees and gorillas) sharing a more recent common ancestor than with monkeys, such as rhesus monkeys.
When it comes to vision, most primates, including humans, have three kinds of cones that allow them to see the world in full color. This is different from many other mammals, which may have fewer types of cones and thus a more limited color perception. For example, dogs are unable to distinguish between red and green.