What Does the Facial Feedback Hypothesis Propose

What does the facial feedback hypothesis propose?

A) Facial movements that originally served biological functions eventually evolved to provide feedback to others about the organism's emotion state
B) Facial expressions contribute to your emotional state through sensory input from the face to the brain
C) People automatically mimic one another's facial expressions using their own facial muscles
D) Facial expressions are the result of a feedback loop between social intentions and emotion states