Which drug category is primarily used to relieve anxiety and promote relaxation?

The correct answer is the category of depressants. Depressants are substances that work by slowing down the central nervous system, leading to a calming effect on the body and mind. This category includes drugs like benzodiazepines, which are commonly prescribed to alleviate symptoms of anxiety and promote relaxation. By enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA), depressants help reduce neuronal activity, making individuals feel more at ease and less anxious.

The other categories mentioned do not serve the primary purpose of relieving anxiety. Stimulants, for example, increase alertness and energy levels, often leading to heightened anxiety rather than relief from it. Analgesics are primarily intended for pain relief and do not directly address anxiety. Antibiotics, on the other hand, are used to treat bacterial infections and have no effect on anxiety or relaxation.