Stuart wanted Jen to change the date of their family holiday dinner. When she didn't comply, he said, "If you don't change the date, I won't attend the event!" This tactic is defined in the text as

Which of the following is not a regulative communication rule? [pp. 72–73, III]

a. Children should not interrupt adults. b. We do not talk about private issues in public. c. Call out "Amen" in response to the pastor. d. Sticking your tongue out at someone is rude. e. Applaud at the end of a speech.

Darrah noticed that her friend, Yul, was rubbing his eyes and yawning during class today. She assumed that Yul was tired, but to be sure, Darrah decided to ask him about it. What communication behavior did Darrah use for clarification?

A. expectancy violation B. perception checking C. emotional contagion D. dominance