Stedman and colleagues argue that size reductions in facial muscles and facial bones in early hominids may have led to:

A) changes in diet.
B) changes in mating patterns.
C) changes in hunting strategies.
D) None of the answers is correct.

Facial Muscles

A group of striated skeletal muscles situated beneath the skin of the face, involved in facial expression.

Early Hominids

Members of the early human lineage, including all species closely related to humans after the split from the lineage leading to chimpanzees and bonobos.

Mating Patterns

The behavioral strategies or practices of a species in relation to reproduction and selection of partners.