When a person first begins drinking alcohol, two drinks produce relaxation and drowsiness. After 1 year of drinking, four drinks are needed to achieve the same relaxed, drowsy state. Why does this change occur?

A) Tolerance develops
B) The alcohol is less potent
C) Antagonistic effects occur
D) Hypomagnesemia develops

Tolerance

The process by which the body becomes less responsive to a substance or drug over time, requiring larger doses to achieve the same effect.

Antagonistic Effects

Outcomes that occur when two substances or actions counteract or inhibit each other's effects.

Hypomagnesemia

A medical condition characterized by low levels of magnesium in the blood, which can lead to various health problems.