_______ speed up the central nervous system, and causes anxiety, paranoia, increased heart rate and reduces appetite.

• A. Hallucinogens
• B. Stimulants
• C. Anabolic Steroids
• D. Depressants

Answer: (B)

Stimulants speed up the central nervous system, increasing alertness and energy by boosting brain activity and sympathetic arousal. That heightened arousal drives a faster heart rate and can bring on anxiety or paranoia, especially at higher doses or with prolonged use. They also tend to reduce appetite because these drugs tamp down hunger signals while the body stays in a state of heightened alert. Hallucinogens mainly alter perception rather than broadly speeding up CNS activity; anabolic steroids affect hormones and mood with different patterns of effects; depressants slow CNS activity, leading to relaxation or drowsiness rather than increased heart rate or appetite suppression.