Name one factor that affects a person's BAC level.

Body weight is a significant factor that affects a person's Blood Alcohol Concentration (BAC) level. This is because the amount of body water and fat affects how alcohol is distributed in a person's body. Individuals with a higher body weight generally have a higher volume of blood and body water, which can dilute the alcohol consumed. As a result, someone with a higher body weight may have a lower BAC compared to a lighter individual after consuming the same amount of alcohol. Understanding this relationship is crucial for responsible alcohol service and recognizing how different individuals may experience the effects of alcohol differently based on their body weight.