Which of the following best describes how psychoactive drugs affect the brain?
Which of the following best describes how psychoactive drugs affect the brain?
Select one:
a. They cause new neural connections to be formed that produce new neurotransmitters
b. They change the types of neurotransmitters that are released
c. They alter the amount and/or action of the various neurotransmitters
d. They create new neurotransmitters