When parents change their emotional expressions in response to infants' emotional expressions,infants also modify their emotional expressions in response to their parents' emotional expressions.This process is

A) reciprocal.
B) synchronous.
C) both reciprocal and synchronous.
D) neither reciprocal nor synchronous.

Reciprocal

Involving a mutual exchange or relationship where both or all parties give and take something.

Synchronous

Occurring, operating, or existing at the same time; coordinated in time.

Emotional Expressions

Observable manifestations of emotions, typically through facial expressions, body language, and vocal tones, communicating feelings to others.