Primates, like other mammals, have special glands in their skin that allow them to excrete fluid. the fluid evaporates from the skin, absorbing heat as it turns into a gas.

this process, known as sweating, is used by animals such as primates for
a.
adding water to the body's interior.
b.
hiding the animal from predators.
c.
insulating the animal's body to stay warm.
d.
getting rid of excess body heat.