Question

which of the following statements is true about dopamine?
a. the brain’s purpose in releasing dopamine is to naturally discourage healthy behaviors.
b. the release of dopamine as a result of drug use tricks the brain into believing the drug is good for the body.
c. the release of dopamine as a result of drug use promotes normal brain functioning.
d. drug addicts often have a decreased toleration for dopamine after prolonged drug use.

Explanation:

• Option A is false: Dopamine reinforces healthy, survival-related behaviors (like eating, socializing), not discourages them.
• Option B is true: Drug use triggers large, unnatural dopamine releases, which the brain interprets as a positive, beneficial signal, driving compulsive drug-seeking.
• Option C is false: Drug-induced dopamine release disrupts normal brain reward pathways, impairing, not promoting, normal function.
• Option D is false: Prolonged drug use leads to increased dopamine tolerance, as the brain reduces dopamine receptors to compensate for overstimulation, not decreased tolerance.

Answer:

B. The release of dopamine as a result of drug use tricks the brain into believing the drug is good for the body.