Which of the following is true about preventing addictions?
a. Most college students engage in addictive behaviors.
b. Chronic substance abusers do not get the normal surge in dopamine from excitable events, when compared to non-addicts.
c. There are no positive addictions.
d. For those with a substance addiction, they experience an inability to surge dopamine from anything other than their addictive substance, and this inability to surge dopamine is irreversible.