It is illegal for a person under age 21 to drive with a blood alcohol concentration (BAC) that is _______ or higher.

0.01%
0.1%
0.8%
0.08%
Explanation

In California, it is illegal for any person under the age of 21 to operate a vehicle with a blood alcohol concentration (BAC) of 0.01% or higher. Even a small amount of alcohol can impair a driver's judgment and reaction time, putting both the driver and other people on the road in danger.

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