John aaron for doing him a favor by giving him a pat on the shoulder while saying, "you're the best! " this is an example of which of the functions of non-verbal messages?
a. complementing. b. re-arranging. c. substituting. d. contradicting. e. replacing.

a. complementing

Explanation: Non-verbal messages such as facial expressions and maintaining eye contact serve different functions. Here, John pats Aaron on the shoulder while saying "You're the best!" John's non-verbal message complements his verbal message. By adding this gesture, it emphasizes what he is saying.

Non-verbal communication may also substitute, accent or regulate a spoken/verbal message.

answer; obscene;

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