Which statement best defines a depressant?

• A. A drug that speeds up the heart
• B. A drug that slows the central nervous system.
• C. A device used to prevent seizures
• D. A hormone replacement therapy

Answer: (B)

Depressants slow the central nervous system, meaning they reduce brain activity and slow down bodily functions like heart rate, breathing, and reflexes. This slowing produces drowsiness, slower thinking, impaired coordination, and blurred judgment. That’s why the statement describing a depressant as a drug that slows the central nervous system is the best fit.

In contrast, substances that speed up the heart are stimulants, not depressants. A device used to prevent seizures and a hormone replacement therapy are unrelated to how depressants affect the brain and body. Common depressants include things like alcohol and certain prescription medications that dampen CNS activity, and safety-wise they can be dangerous, especially when mixed with other depressants or when driving or making important decisions.