Answer: Humor great stress reliever because it releases cortisol and epinephrine along with endorphins which make you happy and can reduce physical pain.Laughing strengthening our immune system by releasing antibody- producing cells which protects your body.Laughing is the reaction of the motor region of your brain becoming active.
Explanation:
1A
2 would go with something else, not any of these
3B
4D
5 would go with something else, not any of these
It means chief, or princapal