Effective speakers must be aware of their nonverbal messages. Nonverbal means

A) content delivered by visual aids.
B) information included on the outline, but not in the speech.
C) appearance, movements, and vocal qualities.
D) body language only.

Nonverbal

Pertaining to forms of communication that do not involve speech or written language, such as gestures, facial expressions, and posture.

Vocal Qualities

The characteristics of a person's voice, including tone, pitch, loudness, and expressiveness, which affect how spoken communication is perceived.