Non verbal communication uses signals other than words,such as gestures,posture and facial expressions,to convey meaning. Raising a hand is a commonly accepted gesture indicating a wish to speak. The meaning is understood without any spoken words,so it is a non verbal cue.
Option A:
Verbal communication requires spoken or written words and is not necessary for this signal.
Option B:
Hence non verbal communication is the most accurate description of the raised hand signal.
Option C:
Written communication would involve text or symbols on paper or screen,which the stem does not mention.
Option D:
Mass communication involves transmission via media to large audiences,not individual classroom gestures.
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