Eva Is New to Her Job and She Has a Lot

Eva is new to her job and she has a lot of questions. She has mostly been asking her new boss for help, but while he is out to lunch, Eva needs some help. She walks into the cubicle of one of her new coworkers and asks if she could take up a couple minutes of his time. He turns in his chair, sighs, and rolls his eyes. What function of nonverbal communication is this representing to Eva?

A) Managing conversations
B) Clarifying verbal messages
C) Signaling emotion
D) Providing feedback