How does alcohol affect the body?

Answer: B — By depressing the functions of the brain and the body

Alcohol is a central nervous system depressant, meaning that it slows down the functions of the brain and body. This can result in slowed reactions, impaired coordination, and decreased inhibitions. Option A is incorrect because alcohol does not stimulate brain functions, rather it has the opposite effect. Option C is also incorrect as alcohol does not increase physical strength, in fact excessive alcohol consumption can lead to weakness and fatigue. Option D is incorrect because alcohol can actually impair mental clarity and decision-making abilities.