Which of the following does not affect BAC?

Blood Alcohol Concentration (BAC) is a measure of the amount of alcohol present in a person's bloodstream and is influenced by various factors related to alcohol consumption and individual physiology. The height of an individual does not directly affect BAC because BAC is primarily determined by the volume of alcohol consumed relative to body weight and the rate of absorption and elimination of alcohol in the body.

In contrast, the other factors mentioned play significant roles in determining BAC. For example, the type and amount of food consumed when drinking can slow the absorption of alcohol, ultimately affecting the BAC level. Similarly, the longer the period over which alcohol is consumed, the lower the peak BAC might typically be, as the body has more time to metabolize the alcohol. Lastly, an individual’s age can influence metabolism and body composition, which can in turn affect how quickly alcohol is processed in the body and consequently impact BAC levels.