Final answer:
Body language is the study of communication through nonverbal means such as posture, mannerisms, and body movements. It includes gestures, posture, and other nonverbal communication forms.
Step-by-step explanation:
The study of communication through nonverbal means, such as posture, mannerisms, and body movements, is called body language. Body language includes gestures (such as facial expressions and hand movements), posture, and other forms of nonverbal communication that can convey meaning and emotions.