Final answer:
Alcohol is a depressant drug that slows down the body's system. Depressants suppress central nervous system activity and work by acting on the GABA neurotransmitter system.
Step-by-step explanation:
Alcohol is a depressant drug; it helps us relax by slowing down the body's system. Depressants, such as alcohol, barbiturates, and benzodiazepines, tend to suppress central nervous system activity. They work by acting as agonists of the gamma-Aminobutyric acid (GABA) neurotransmitter system, which has a quieting effect on the brain.