Which of the following driving skills is/are affected by the use of alcohol and/or drugs?
- Alertness.
- Coordination.
- Both of the above. ✓
Answer: C. Both of the above.
Both alertness and coordination are affected by alcohol and/or drugs, so the correct choice is the one naming both skills.
Why this is the answer
The handbook says DUI laws cover alcohol and any drug that affects your ability to drive safely, and that these substances affect your ability to drive and to react to what you see and hear. Reacting to what you see and hear is an alertness skill, and controlling the car safely depends on coordination. The Driver Safety section also lists coordination problems and alcohol or drug use together as things an officer notes after a stop or collision. Since both skills are affected, picking only one of them leaves out half the answer.
Why the other answers are wrong
- A. Alertness. — Naming only alertness leaves out coordination, which the handbook also ties to alcohol and drug use.
- B. Coordination. — Naming only coordination leaves out alertness, and the handbook says these substances affect your ability to react to what you see and hear.
Remember it
Think of alcohol and drugs as hitting the driver in two places at once: how sharply you notice things and how smoothly you control the car.