Final answer:
The situation described is an example of a stress reaction. Stress reactions occur when the body perceives a threat or a challenging situation and triggers a physiological response.
Step-by-step explanation:
The situation described is an example of a stress reaction (c).
Stress reactions occur when the body perceives a threat or a challenging situation and triggers a physiological response. In this case, the stress of feeling unprepared for the solo performance has caused the development of a rash.
Long-term stress can have negative effects on our physical and mental health, so it's important to manage stress effectively and seek support if needed.