Which substance can significantly impair your driving ability?

Driving ability can be significantly impaired by both prescribed medication and alcohol, making the choice that includes both of these substances the most accurate.

Certain prescribed medications can cause side effects such as drowsiness, dizziness, blurred vision, or slowed reaction times, all of which can compromise a driver's ability to operate a vehicle safely. It's important for drivers to be aware of how any medication they take can affect their cognitive and physical functioning.

Alcohol is widely recognized for its detrimental effects on driving. It affects judgment, coordination, reaction times, and overall motor skills, leading to a higher risk of accidents.

While caffeine can help to increase alertness, it does not significantly impair driving ability like the other two substances. Thus, the presence of both prescribed medication and alcohol as impairing factors justifies the selection that includes both. Understanding the effects of these substances is crucial for maintaining safety on the roads.