Question

drug, such as alcohol and barbiturates, that dampens central nervous system activity

depressant
diazepam
naproxen
opiate
atropine

Explanation:

Depressants are drugs that dampen central nervous system activity. Alcohol and barbiturates are examples of depressants. Diazepam is a specific type of depressant (benzodiazepine), but the question is asking for the general category. Naproxen is a non - steroidal anti - inflammatory drug (NSAID) used for pain relief. Opiates are drugs like morphine that act on the opioid receptors for pain relief and have a different mechanism than dampening general CNS activity. Atropine is an anticholinergic drug used to treat certain heart conditions and other medical issues, not a CNS depressant.

Answer:

depressant