1. Which statement about neurotransmitters and medications is true?
A.
Natural neurotransmitters such as endorphins have been discovered after the development of medications.
B.
Some medications were developed after the discovery and known action of the neurotransmitters in the brain.
C.
Neurotransmitters receive messages from most medications.
D.
The neurotransmitter serotonin is directly linked to depression. Following this discovery, the antidepressant Prozac was developed.