What is the effect of alcohol on motor skills?

Alcohol has a well-documented effect on motor skills, primarily leading to impairment rather than enhancement. When consumed, alcohol affects the central nervous system, which can result in decreased motor coordination and slower reaction times. This is because alcohol depresses brain functions and disrupts the communication between the brain and the body, making it difficult to perform tasks that require precise movements and quick responses.

Individuals under the influence of alcohol may struggle with balance, hand-eye coordination, and overall physical control, increasing the risk of accidents and injuries. This detriment to motor skills is a significant reason why activities such as driving are strictly regulated regarding alcohol consumption.

In contrast, the other options suggest that alcohol has either no effect or enhances performance in some way, which does not align with the scientific understanding of alcohol's impact on motor skills. Thus, the correct understanding of alcohol's effects points to its impairment of coordination and reaction timing.