What effect does alcohol have on coordination and motor skills?

Alcohol primarily functions as a central nervous system depressant, which leads to a range of cognitive and motor impairments. When consumed, it depresses brain activity, affecting important functions such as coordination, balance, reaction time, and overall motor skills. This impairment occurs because alcohol interferes with the communication between neurons, leading to decreased muscle control and poor coordination.

As a person's blood alcohol concentration (BAC) rises, these impairments become more pronounced, increasing the risk of accidents and injuries. Skills that require fine motor coordination, such as driving or operating machinery, are particularly affected.

The other options either suggest a positive effect, no effect, or an increase in sensitivity, which do not align with established research regarding alcohol consumption and its effects on physical abilities. In reality, alcohol consistently results in diminished coordination and motor skills, emphasizing the importance of understanding its risks.