What can happen if you underestimate the effects of alcohol on your judgment?

Underestimating the effects of alcohol on your judgment can lead to significant risks, particularly when it comes to making decisions about driving. Alcohol is known to impair cognitive functions and judgment, making you less able to assess your own impairment realistically. When individuals underestimate how alcohol affects them, they may mistakenly believe they are fit to drive, even when they are not. This false sense of confidence can lead to driving under the influence, significantly increasing the chances of being involved in an accident or engaging in unsafe driving behaviors.

In contrast, the other options do not accurately reflect the reality of alcohol’s effects. Making safe driving choices is unlikely when judgment is impaired; the odor of alcohol does not prevent someone from driving; and, alcohol clearly affects driving ability, contradicting the idea that it doesn't have any effect. Understanding how alcohol impacts judgment is crucial for promoting safe driving practices.