Answer:
These psychological and physical changes demonstrate the intrapersonal functions of an emotion.
Explanation:
Christa is experiencing anger as an intrapersonal function of an emotion because she is demonstrating the role that emotions play within each person individually. She experiences physical symptoms herself and she becomes more aware and productive herself when she becomes angry. This gives her personal motivation to overcome the obstacle or entity that is making her angry. One of the intrapersonal functions of emotion is that they help us to act quickly with little conscious awareness of the reason for the motivation and alertness.