Which of the following is an effect of alcohol?

Choosing the effect of alcohol as a factor that slows your ability to react highlights one of the primary impacts of alcohol consumption on the central nervous system. Alcohol acts as a depressant, which means it slows down brain activity. This results in delayed reaction times, impaired judgment, and decreased motor coordination. When someone consumes alcohol, their neurological pathways are affected, leading to slower responses to stimuli, which can significantly impair activities such as driving or operating machinery.

In contrast, increased alertness and enhanced memory are not associated with alcohol use, as alcohol generally impairs cognitive functions. Improved muscle coordination is also negatively impacted, as alcohol can lead to a lack of coordination and balance. Therefore, the statement that alcohol slows your ability to react aligns with the physiological effects of alcohol on the body and mind, illustrating a critical area of concern in situations involving alcohol consumption.