Final answer:
The effect of alcohol on the body is that it impairs judgment and coordination due to its depressant properties. This impact leads to decreased alertness and may result in severe consequences at higher doses.
Step-by-step explanation:
Alcohol is a psychoactive substance that has various effects on the body and brain. One of the direct impacts of alcohol consumption is that it impairs judgment and coordination, which can be dangerous and lead to accidents and injuries.
Rather than increasing alertness or enhancing cognitive functions, alcohol acts as a sedative, often leading to decreased levels of alertness and a reduction in behavioral control.
For those who consume it excessively, there's a risk of more severe outcomes such as loss of consciousness, memory blackouts, and even life-threatening respiratory depression.
The correct answer to the question regarding the effect of alcohol on the body is 3) It impairs judgment and coordination. This is because alcohol functions as a depressant, slowing down brain function and affecting areas critical for decision making and physical movements.