Which factor influences blood alcohol level?

The factor that influences blood alcohol level most significantly is the time spent drinking. The more time a person spends consuming alcohol, the greater the amount of alcohol that can be absorbed into their bloodstream. This is because alcohol enters the bloodstream relatively quickly after consumption, and prolonged drinking without breaks can lead to higher peaks in blood alcohol concentration (BAC).

Additionally, drinking over an extended period can affect the body's ability to metabolize alcohol. The liver processes alcohol at a steady rate, and if consumption exceeds this rate, blood alcohol levels can rise. Conversely, if someone drinks rapidly in a short period, their BAC may escalate quickly, leading to intoxication.

Factors like the age of the drinker, the color of the beverage, and the type of glass used may play minor roles in individual drinking experiences but do not directly impact the actual blood alcohol content. For instance, age might affect metabolism or tolerance, but it isn’t a direct factor like the duration of alcohol consumption, which has a clear and quantifiable effect on BAC.