Which of the following is a category of psychoactive substances?

Which of the following is a category of psychoactive substances?

• A. Vitamins
• B. Depressants
• C. Metals
• D. Proteins

Answer: (B)

Psychoactive substances are chemicals that act on the brain to change mood, perception, or behavior. They’re categorized by the kind of effect they have on the central nervous system. Depressants slow brain activity, producing sedation, relaxation, and reduced anxiety or arousal. That makes them a clear category of psychoactive substances, with examples like alcohol and various sedatives that dampen neural firing and alter conscious experience. The other options aren’t placed in the psychoactive substance category. Vitamins are nutrients essential for health, metals and proteins are fundamental biological materials; while certain compounds can influence brain function, they aren’t grouped in the standard pharmacology sense as a psychoactive class.

Psychoactive substances are chemicals that act on the brain to change mood, perception, or behavior. They’re categorized by the kind of effect they have on the central nervous system. Depressants slow brain activity, producing sedation, relaxation, and reduced anxiety or arousal. That makes them a clear category of psychoactive substances, with examples like alcohol and various sedatives that dampen neural firing and alter conscious experience.

The other options aren’t placed in the psychoactive substance category. Vitamins are nutrients essential for health, metals and proteins are fundamental biological materials; while certain compounds can influence brain function, they aren’t grouped in the standard pharmacology sense as a psychoactive class.