Final answer:
Jerome takes a deep breath instead of yelling.
Step-by-step explanation:
The sentence that includes an example of reactivity is:
2) Jerome takes a deep breath instead of yelling.
Reactivity refers to the ability to control one's actions and emotions in response to a situation. In this scenario, Jerome's initial reaction may be to yell in frustration, but he chooses to take a deep breath instead, demonstrating self-control and reacting in a calm manner.