Questions of _____ concern what is or is not true, what does or does not exist, what did or did not happen

In terms of the uses of nonverbal communication, it can

A. compliment, repeat, replace, mask or contradict verbal communication. B. encourage, discourage, facilitate, or deny verbal communication. C. repeat, suggest, replace, mask, or confirm verbal communication. D. confirm, encourage, discourage, mask or compliment verbal communication.

George Lucas started ________ during the filming of Star Wars

Fill in the blank(s) with correct word