Why Have So Few Primates Gone Extinct Compared to Other

Multiple Choice

Why have so few primates gone extinct compared to other species, such as mussels or birds?

A) Primates have large brains.
B) Primates are not killed for food or other human uses.
C) Primates live in stable environments.
D) Primates are among the most closely monitored and protected species.
E) Primates are highly mobile.