Which statement describes the effect of cold medicines on driving?

• A. It increases alertness
• B. It often makes you drowsy
• C. It improves reaction time
• D. It decreases fatigue

Answer: (B)

Medicines taken for colds can impair driving because they often cause drowsiness. Antihistamines and some other cold-relief ingredients can sedate you, reducing alertness and slowing your reaction time. When you’re sleepy, it’s harder to notice hazards, judge distances, and respond quickly to sudden situations on the road, which makes driving unsafe. That’s why the statement describing that cold medicines often make you drowsy is the best choice. Some people may tolerate non-drowsy versions, but always check the label and avoid driving if you feel sleepy or mentally slowed. The ideas that these medicines would increase alertness, improve reaction time, or decrease fatigue don’t match their typical effect.