Which of the following is true of a person with a low BAC?

• A. They are completely sober.
• B. They have no impairment.
• C. They are at zero risk.
• D. They may already be experiencing effects that impact judgment.

Answer: (D)

Even small amounts of alcohol can affect thinking and decision-making. At low levels, the brain’s frontal areas that control judgment and self-control start to slow down, so a person can feel only mildly buzzed while their ability to assess risk, judge distances, and react to traffic is already diminished. This means they may be making poorer choices or taking more risks even though they don’t feel completely drunk. That’s why this statement is true: a person with a low BAC may already be experiencing effects that impact judgment. The other ideas—being completely sober, having no impairment, or being at zero risk—don’t fit because impairment and risk can exist even at low BAC and don’t disappear simply because someone doesn’t feel heavily intoxicated.