As alcohol builds up in your blood, it:
- Slows down your reactions. ✓
- Makes you feel less confident.
- Begins to metabolize itself more quickly.
- Decreases the number of driving errors.
Answer: A. Slows down your reactions.
As alcohol builds up in your blood, it slows down your reactions.
Why this is the answer
The handbook says alcohol affects the mental and physical skills needed to operate a vehicle and react to events. It lists slower reactions to sounds and trouble judging another vehicle's speed as early effects of drinking. That supports the idea that alcohol buildup slows your reactions, rather than making you drive better or feel less confident.
Why the other answers are wrong
- B. Makes you feel less confident. — The passage describes lost judgment and impaired sight, not a drop in confidence, so it does not support that effect.
- C. Begins to metabolize itself more quickly. — The handbook does not say alcohol makes itself metabolize faster; it focuses on how alcohol affects judgment, sight, and reactions.
- D. Decreases the number of driving errors. — The handbook says alcohol impairs driving skills and causes slower reactions, so it does not support fewer driving errors.
Remember it
Picture a lag between hearing a sound and responding—that is the kind of slowdown the handbook links to alcohol.