The more alcohol a person consumes, the greater the negative effect on which of the following?

The correct choice reflects the well-documented effects of alcohol on psychomotor functions. As alcohol consumption increases, it impairs various physical and cognitive abilities, particularly those required for coordination, comprehension, and reaction time. This is due to alcohol's depressant effects on the central nervous system, which can lead to slower reflexes and decreased ability to process information quickly and accurately.

For instance, coordination is affected because alcohol disrupts the normal functioning of the cerebellum, the part of the brain that controls balance and movement. Similarly, comprehension can be hindered when individuals struggle to understand or interpret information due to the sedative effects of alcohol, while reaction time increases as the neurological pathways become less effective. This combination can significantly increase the risk of accidents or mistakes, especially in settings that require quick thinking or physical coordination, such as driving or operating machinery.

Understanding these effects is critical for responsible alcohol service and consumption, as it highlights the importance of monitoring alcohol intake and recognizing its immediate consequences on one's abilities.