Caffeine:
A) is the most widely used psychoactive drug in the world.
B) gets its stimulant effect by promoting the release of adenosine in the brain's prefrontal cortex.
C) gets its stimulant effect by blocking the reuptake of dopamine, serotonin, and norepinephrine.
D) is the most widely used non-physically addictive drug in the world.

Question

Quizplus · Accepted Answer

Caffeine is the most widely used psychoactive drug in the world. It is found in many common beverages such as coffee, tea, and soda, and is also used in various medications and supplements.

Answer: C
 Caffeine gets its stimulant effect by blocking the reuptake of dopamine, serotonin, and norepinephrine in the brain, which can increase alertness, wakefulness, and focus. It does not promote the release of adenosine.

Therefore, the best choices are A and C.