Which of the following could indicate potential subject aggression through nonverbal cues?

The presence of clenched fists and rapid angry movements is a strong indicator of potential aggression. These nonverbal cues suggest that a person may be experiencing heightened emotional arousal or irritability, which can often precede aggressive behavior. Clenched fists can signal a readiness to engage in conflict or an urge to act out, while rapid movements may indicate impatience, agitation, or a lack of control over one’s emotions. Understanding these cues is crucial for correctional and probation officers, as they can help in assessing a subject's emotional state and in taking appropriate action to de-escalate a potentially volatile situation or to ensure safety.

In contrast, other options present behaviors that generally denote calmness, relaxation, or agreement, which do not foreshadow aggression. Therefore, recognizing the specific nonverbal signals of aggression is essential for effective supervision and intervention in a correctional setting.