An example of nonverbal communication in Barack Obama's 2009 Back to School speech is that he pauses and smiles while the seniors cheer. Option C is correct.
Nonverbal communication (NVC) is the nonlinguistic transmission of information through visual, auditory, tactile, and physical channels.
It includes the utilization of visual cues including body language (kinesics), distance (proxemics) and physical environments/appearance, of voice (paralanguage) and of touch (haptics).
