Answer:
conformity; normative influence
Step-by-step explanation:
Jerrod went out with his friends for the first time and noticed they were acting differently towards the girls by whistling at them. He didn't think is was a good idea, but he felt pressured to do the same bahavior. By going along with the behavior of the group, Jerrod has demonstrated conformity. If he wanted to be accepted by his group of friends, his behavior would be called normative influence.