For how long may a dealer authorize a person to transport a vehicle on a dealer plate?

The correct answer is that a dealer may authorize a person to transport a vehicle on a dealer plate for a maximum of 24 hours. This regulation is in place to ensure proper control and accountability regarding the usage of dealer plates, which are designated for specific purposes related to the dealership's operation.

Allowing a 24-hour timeframe strikes a balance between providing flexibility for test drives, vehicle deliveries, or other dealership-related activities while ensuring that dealer plates are not misused or extended beyond the intended purpose. Proper adherence to this regulation is important for compliance with DMV rules and for maintaining the integrity of the dealership's operations.

In contrast, the other options suggest longer timeframes, which would increase the risk of misuse of dealer plates and complicate accountability for vehicle transportation beyond the defined scope of dealership activities.