Samir volunteered for a psychology study of emotion.If Samir were injected with _______,he would experience feelings of arousal.

A) leptin
B) orexin
C) epinephrine
D) PYY

Epinephrine

A hormone also known as adrenaline, secreted by the adrenal glands, increasing heart rate and blood pressure during stress.

Arousal

A physiological and psychological state of being awake or reactive to stimuli, often involving heightened physical activity and alertness.

Leptin

A hormone produced by adipose cells that helps to regulate energy balance by inhibiting hunger, thereby helping to regulate body weight.