Dr. Dzneid is making a presentation to high school seniors about marijuana. She describes the benefits of medical marijuana, but cautions that people must also consider that:
a. Marijuana poses significant risks in the brains of older adults.
b. There is no conclusive evidence that marijuana helps in a medical setting.
c. Marijuana poses significant risks for the brains of teenagers.
d. Marijuana is a depressant drug that is highly addictive.