Alcohol is a(n) ____________, which means it slows the function of the central nervous system.DepressantAmphetamineEndorphinOpiate

To determine the correct answer, we need to understand the definitions of the given options and how they relate to the central nervous system.

1. Depressant: A depressant is a substance that slows down the function of the central nervous system. It can reduce arousal and stimulation, leading to effects such as relaxation, drowsiness, and decreased inhibition.

2. Amphetamine: An amphetamine is a stimulant that increases the activity of the central nervous system. It can lead to increased alertness, energy, and euphoria.

3. Endorphin: Endorphins are neurotransmitters produced in the brain that act as natural painkillers and mood elevators. They are not classified as substances that directly alter the central nervous system's function in the same way as drugs.

4. Opiate: Opiates are a class of drugs derived from the opium poppy plant. They are primarily used for pain relief and can also produce euphoria. While they do affect the central nervous system, they are not specifically known for slowing its function.

Given these definitions, the correct answer is:

Alcohol is a(n) Depressant, which means it slows the function of the central nervous system.