Final answer:
Body language, tone of voice, and facial expressions are all observed by counselors when evaluating client messages.
Step-by-step explanation:
Body language is the expression of emotion in terms of body position or movement. Research suggests that we are quite sensitive to the emotional information communicated through body language, even if we're not consciously aware of it. Tone of voice and facial expressions also serve as a means by which we communicate information about our emotional states.