You suspect your friend has been using drugs for some time, but have been afraid to confront him. He used to be a very attractive guy that all the girls liked, but people are noticing that he is acting more aggressive and that his mouth is showing lots of rapid tooth and gum decay.

Which drug should you worry he is taking?
(1 point)
Responses

alcohol
alcohol
marijuana
marijuana
methamphetamine
methamphetamine
smokeless tobacco

Based on the symptoms described, it is most likely that your friend is taking methamphetamine. Methamphetamine use can cause aggressive behavior, rapid tooth and gum decay, and other physical and psychological changes.