Heavy amphetamine use affects a driver in which way?

Heavy amphetamine use makes a driver less coordinated and more likely to be involved in a crash due to its impact on the central nervous system. While amphetamines may initially create a feeling of increased energy and alertness, prolonged use can lead to decreased cognitive function and impaired motor skills. This deterioration in coordination affects the driver's ability to react appropriately to driving conditions, interpret signals from the environment, and execute necessary maneuvers. As a result, the likelihood of accidents and crashes increases significantly.

In contrast, the other options suggest benefits associated with amphetamine use, such as improved coordination, focus, or reaction time, which do not reflect the reality of heavy use's detrimental effects on driving ability. Understanding the risks associated with substance use is crucial for promoting safe driving practices and public safety.