The correct answer is A. kinesics.
Kinesics is the study of body language, which includes facial expressions, gestures, posture, and eye contact. It is a subfield of nonverbal communication.
Proxemics is the study of how people use space to communicate. It includes the study of personal space, territoriality, and proxemic cues.
Semantics is the study of meaning in language. It includes the study of words, phrases, and sentences.
None of these options is the study of gestures and body postures for their impact on communication.
