Which symptom would suggest slowed reaction times due to alcohol consumption?

The symptom that suggests slowed reaction times due to alcohol consumption is the inability to concentrate and repeating oneself. Alcohol is a central nervous system depressant, which affects cognitive functions, including attention and memory. As a person consumes alcohol, their ability to focus diminishes, leading to lapses in concentration and the tendency to repeat information or actions. This is a clear indicator of impaired cognitive processing, which directly correlates to the slowed reaction times one might experience under the influence of alcohol.

In contrast, increased alertness and concentration, feelings of euphoria and excitement, and enhanced motor skills would suggest either a lack of impairment or even a temporary increase in activity levels, which is not typical with alcohol consumption. These responses can mislead someone into underestimating the effects of alcohol on their body and mind.