Most primates have

a. all of these

b. nails instead of claws on their fingers and toes

c. well-developed communication systems

d. grasping feet

e. unspecialized limbs

b. nails instead of claws on their fingers and toes

Explanation:

Primates are a class of mammals in which humans are included. It is a very varied group, ranging from 30 gram lemurs to over 200 kg gorillas.

This group of animals is characterized, among other things, by having five fingers at its ends. They have clavicle, binocular vision, orbits surrounded by bone, etc. The vast majority have nails instead of claws, opposing thumb and vision that captures all colors.

Unfortunately, it is a very threatened order, as 60% of the world's primates could disappear within 25 years. This is all the fault of one species: the human.