Which mirrors are necessary for the driver's view to be compliant?

The correct choice emphasizes the requirement for any mirror that provides the necessary visibility for the driver. In Maine, as in many jurisdictions, a vehicle must be equipped with mirrors that allow the driver to have a clear view of the areas to the side and behind the vehicle to ensure safe operation. This includes seeing other vehicles, pedestrians, and obstacles that may be in the driver’s blind spots.

When considering compliance, it's important to note that while specific mirrors are typically mandated (such as a rearview mirror and side mirrors), the fundamental requirement is that the mirrors provide adequate visibility. This can be achieved through various mirror configurations, and as long as the driver can effectively see what they need to, the mirrors in use meet the legal standards.

Thus, any mirror that facilitates the driver's capability to maintain situational awareness and ensure safe lane changes, merges, and backing up is considered compliant, highlighting the importance of functionality over specific types or numbers of mirrors.