Dr Wold Cautions His Class About Amphetamine Use

Multiple Choice

Dr. Wold cautions his class about amphetamine use. He says, "They speed up central nervous system activity, which can account for users' increased alertness, energy, and feelings of euphoria. They also increase appetite and sleep. However, they are not physically addictive and do not produce tolerance." Which part of Dr. Wold's statement is accurate?

A) Their use increases appetite.
B) They are not physically addictive and do not produce tolerance.
C) They speed up central nervous system activity.
D) Their use increases sleep.