What effects does alcohol have that make driving safely difficult?

The correct choice identifies impairment of crucial functions that are essential for safe driving. Alcohol affects the central nervous system, leading to a deterioration in cognitive and physical abilities. It can significantly impair vision, causing blurred or double vision; hinder judgment, leading to poor decision-making; slow down reaction time, making it difficult to respond to sudden changes or dangers on the road; and reduce reflexes, which are critical for fast and precise responses while driving.

Understanding these effects underscores why even small amounts of alcohol can compromise driving safety. The other options suggest positive effects, such as increased energy and focus, improved reaction time, and enhanced motor coordination, which are misleading and do not reflect the reality of how alcohol affects an individual’s ability to drive safely. In fact, these misleading claims contradict the significant risks associated with alcohol consumption when it comes to operating a vehicle.