What additional punishment may be imposed if a driver with a BAC of .15% or higher refuses a chemical test?

The correct answer is that an extended alcohol treatment program may be imposed on a driver with a BAC of .15% or higher who refuses a chemical test. This requirement is part of California's approach to address more serious instances of impaired driving. When a driver exhibits a high blood alcohol concentration along with the refusal to submit to a chemical test, it indicates a greater level of risk and irresponsibility regarding drinking and driving.

As a result, California legislation often mandates additional consequences, which may include participating in an extended alcohol treatment program. This is aimed at providing education and therapy to help the driver understand the dangers of their behavior and reduce the likelihood of reoffending in the future.

The other options do not align with the legal framework surrounding DUI offenses in California. A lower fine would not be appropriate for someone who shows a significant level of intoxication, and immediate license reinstatement contradicts the penalties associated with refusing a chemical test. The zero tolerance policy is not applicable in this context, as it generally refers to underaged drinking and driving rather than this specific scenario with a high BAC.