Who Among the Following Is Exhibiting a Nonverbal Behavior

Who among the following is exhibiting a nonverbal behavior?

A) Christina reads the rules from a toy manual to her 7-year old son Kurt.
B) Peter gives a pat on the back to Meg to show that he is impressed with her work.
C) Eddie writes on a piece of paper the system of rules governing how words should be strung together and gives it to Vicky.
D) Lois uses honorofic speech forms to make Clarke understand that she runs the company.