What Group of Primates is Referred to as "Lesser Apes

Question

What group of primates is referred to as "lesser apes," in comparison with larger apes?  
A) Orangutan
B) Gorilla
C) Chimpanzee
D) Monkey
E) Gibbon

Accepted Answer

Gibbons (family Hylobatidae) are referred to as "lesser apes" in comparison with the larger apes such as orangutans, gorillas, and chimpanzees (which are in the family Hominidae). Monkeys are a separate group of primates.