Final answer:
The statement about marijuana being the most commonly used psychoactive drug is correct, reflecting its widespread use and changing legal status. Historical data indicates males used marijuana more, but this is evolving, and a 2015 survey found approximately 25% usage among college students.
Step-by-step explanation:
The question about marijuana use among college students touches on various socio-cultural and legal aspects. Here is a detailed examination of the provided options concerning marijuana use:
- College students often underestimate the prevalence of marijuana use among their peers.
- Historically, more males have reported using marijuana compared to females, though this gap may be narrowing with changing societal norms.
- Marijuana is indeed one of the most commonly used psychoactive drugs. The legality of marijuana for recreational or medical use varies by state and federal regulations. Its status is evolving, with numerous states decriminalizing or legalizing it in recent years.
- As for exact usage rates among college students, these figures can vary by study and over time. However, a survey from 2015 pointed to a prevalence rate of around 25% for past-year marijuana use among college students.
Given these points, option 'c' that marijuana is the most commonly used psychoactive drug is directly supported by the reference to its wide use and the context of legalization and decriminalization movements. Option 'd' could also be correct if the specific survey results cited are accurate and reflect the findings of that 2015 survey mentioned in the question.