What are the levels of serotonin in the body when someone is feeling depressed, and how can depression be treated? a. Serotonin levels are low, and by increasing serotonin, the patient will have an increase in happy feelings.
b. Serotonin levels are high, and decreasing serotonin, the patient will have an increase in happy feelings.
c. Serotonin levels are constant, and by decreasing serotonin serotonin, the patient will have an increase in happy feelings.
d. Serotonin levels are fluctuating, and by increasing serotonin, the patient will have an increase in happy feelings.

A. Serotonin levels are low, and by increasing serotonin, the patient will have an increase in happy feelings.

Explanation:

I calculated it logically

answer: the answer is d.

explanation: this is because when you exercise you make your muscle produce a certain liquid, that does not evaporate it.   also when you exercise you do not reduce muscle fiber.   and it does not really control your twitch that much.

answer:

it could come from a variety of sources.

explanation:

..although it was most likely developed through zoonotic transmission, where an infectious disease which usually afflicts when animals jump to humans.