Final answer:
In the United States, it is illegal for adults to drive with a blood alcohol content (BAC) of 0.08% or higher. Breathalyzers are used to measure the ethanol concentration in a person's breath, which indicates their BAC.
Step-by-step explanation:
In the United States, it is illegal for adults to drive with a blood alcohol content (BAC) of 0.08% by volume or higher. In the United States, it is illegal for adults to drive with a blood alcohol content (BAC) of 0.08% or higher.
Breathalyzers are used to measure the ethanol concentration in a person's breath, which indicates their BAC. BAC is a measure of the amount of alcohol in a person's bloodstream.
When an individual consumes alcoholic beverages, it impairs their ability to perform tasks that require skill and judgment, such as driving. To enforce this law, portable devices called Breathalyzers can measure the ethanol concentration in a person's breath, which is directly proportional to their BAC.