_____ is experience-expectant;all babies engage in it.

A) Sign language
B) Waving
C) Babbling
D) The use of holophrases

Experience-Expectant

A concept in neural development suggesting that the brain expects and relies on certain environmental experiences for normal development.

Babbling

The sounds made by babies before they develop actual language, consisting of repetitive syllables that do not have understandable meaning.

Sign Language

A visual means of communication using gestures, facial expressions, and body language, often used by deaf or hard-of-hearing individuals.