Until the age of 3, most children identify the gender of others based on

A) genitals.
B) nonanatomical signs.
C) facial features and musculature.
D) behavior.

Nonanatomical Signs

Indicators or symptoms related to health conditions that are not directly linked to the body's structures or anatomy.

Facial Features and Musculature

The distinctive parts of the face, such as the eyes, nose, and mouth, and the underlying muscle structure that supports and moves them.

Genitals

The external and internal organs of reproduction.