Final answer:
BAC 0.04-0.07% (2 drinks within 30 minutes) is a measurement of blood alcohol concentration (BAC). It helps determine the effects of alcohol on the body.
Step-by-step explanation:
BAC 0.04-0.07% is a measurement of blood alcohol concentration (BAC).
It indicates that a person has consumed 2 drinks within 30 minutes. BAC measures the amount of alcohol in the bloodstream and is used to determine the level of alcohol intoxication.
Understanding BAC is important because it helps determine the effects of alcohol on the body, such as impaired judgment, decreased reaction time, and lowered levels of alertness.