A. A rigid posture, restlessness, and glaring
Rationale: Behavior clues that suggest the potential for violence include a rigid posture, restlessness, glaring, a change in usual behavior, clenched hands, overtly aggressive actions, physical withdrawal, noncompliance, overreaction, hostile threats, recent alcohol ingestion or drug use, talk of past violent acts, inability to express feelings, repetitive demands and complaints, argumentative ness, profanity, disorientation, inability to focus attention, hallucinations or delusions, paranoid ideas or suspicions, and somatic complaints. Violent clients rarely exhibit depression, silence, or hypervigilance.