What should you do if your license plate is lost or stolen?

Answer: B — Report it to law enforcement and apply for a replacement plate

If your license plate is lost or stolen, the appropriate action to take is to report it to law enforcement and apply for a replacement plate. Reporting the loss or theft to the police is essential because it creates a record of the incident, which can protect you from potential identity theft or fraudulent activities that could arise from someone else using your plate. Applying for a replacement plate through your local Department of Motor Vehicles is also crucial, as it helps ensure that you are legal to drive on public roads without facing fines or penalties associated with driving without a valid plate. This process involves filling out an application and often paying a fee for the new plate. The other options do not address the responsibility of the driver in situations involving lost or stolen license plates. Ignoring the issue could lead to legal trouble, purchasing a new vehicle is unnecessary and extreme, and changing the vehicle's color would not solve the problem and could lead to further complications. Therefore, reporting the theft and applying for a new plate is the best course of action.