The fight-or-flight response in humans is activated by epinephrine, a hormone secreted by the glands.

The correct answer would be adrenal gland.

Epinephrine or adrenaline is the enzyme secreted from medulla of the adrenal gland.

Epinephrine enzyme prepares a person for fight and flight situations.

It acts on sympathetic nervous system and increases the cardiac output of a person, blood flow towards the muscles, pupil dilation response, and blood glucose levels.

answer; the above answer to the above statement is (true)