The level of alcohol in the blood is referred to as

blood alcohol concentration (BAC).

The answer is C

I apologize, you are correct. The level of alcohol in the blood is referred to as blood alcohol concentration (BAC).

The level of alcohol in the blood is commonly referred to as Blood Alcohol Concentration (BAC). It is a measure of the amount of alcohol present in the bloodstream, usually expressed as a percentage. BAC is used as a standard measure to determine a person's level of intoxication and the potential impairment of their physical and mental abilities.

To determine someone's BAC, you would need to measure the ratio of alcohol to total blood volume. This can be done through various methods, including breathalyzer tests, blood tests, or saliva tests. However, it's important to note that BAC can be influenced by factors such as body weight, metabolism, tolerance, and the rate at which alcohol is consumed.

To calculate or estimate your BAC, you can use a BAC calculator or follow a formula like Widmark's equation. This equation takes into account factors such as gender, weight, number of drinks, and time elapsed since drinking. Keep in mind that these calculations are approximate and can vary from person to person.

It's worth noting that driving under the influence of alcohol is illegal and can have serious consequences, including accidents, injuries, and legal penalties. It's always best to avoid drinking and driving altogether to ensure your safety and the safety of others.