Which of the following is NOT caused by alcohol consumption?

Improvement of motor function is indeed the correct answer because alcohol consumption has been widely studied and recognized for its detrimental effects on physical and cognitive abilities. When a person consumes alcohol, it acts as a depressant on the central nervous system, leading to a decline in motor skills. This impairment manifests as slowed reaction times, poor coordination, and impaired judgment—attributes that can severely hinder a person's ability to perform tasks that require motor function and quick decision-making.

In contrast, options highlighting reduced reaction time, poor judgment, and loss of coordination directly correlate with the effects of alcohol, demonstrating how it negatively impacts a person's abilities. Therefore, the assertion that alcohol consumption can improve motor function is incorrect and showcases a misunderstanding of its effects.