Final answer:
How much you weigh, how fast you drink, and the number of drinks you've had can all affect your blood alcohol concentration (BAC).
Step-by-step explanation:
All of the options mentioned can affect a person's blood alcohol concentration (BAC).
Firstly, how much you weigh can impact your BAC. A person who weighs less will tend to have a higher concentration of alcohol in their blood compared to a person who weighs more when consuming the same amount of alcohol.
Secondly, how fast you drink can also affect your BAC. When alcohol is consumed quickly, the body may not have enough time to metabolize it, leading to a higher BAC.
Lastly, the number of drinks you've had is another factor that can affect your BAC. Each drink adds to the overall alcohol content in the body, increasing the concentration of alcohol in the blood.