Ralph, a secret service agent, interrogates a criminal suspect. Ralph carefully observes the suspect's body movements and notices him clenching his teeth, drumming his fingers, and profusely perspiring. Given this information, it is evident that Ralph is well versed in _____.

A) phonemics
B) proxemics
C) chronemics
D) kinesics

Kinesics

Kinesics is the study of body movements, facial expressions, and gestures as a form of non-verbal communication.

Proxemics

The study of an individual’s perception and use of space.

Phonemics

The study of phonemes or the smallest units of sound in a language that can distinguish meaning, focusing on their organization and function in particular languages.