Which hormone is responsible for the fight-or-flight response?
A
Thyroxine
B
Estrogen
C
Adrenaline
D
Insulin
Correct Answer: Option C — Adrenaline
Explanation:
Adrenaline, also known as epinephrine, is released by the adrenal glands during stressful or dangerous situations, triggering the fight-or-flight response. It increases heart rate, blood pressure, and energy supplies to prepare the body for action.