What should the outside mirror provide maximum visibility of?

The outside mirror is designed to provide the driver with maximum visibility of the side and rear of the vehicle. This is crucial for safe driving as it allows the driver to monitor other vehicles, pedestrians, and obstacles that may not be visible through the rearview mirror or through direct sight from the driver's seat. By enhancing the driver's awareness of their surroundings, particularly in blind spots, the outside mirror plays a key role in ensuring safe lane changes and merges, as well as overall awareness of the traffic situation behind and beside the vehicle.

The other options focus on limited areas that the outside mirror is not intended to cover. For instance, only showing the front of the car or the road ahead neglects the necessity of checking for vehicles or hazards that may be approaching from the side or behind, which are vital for making informed driving decisions. The interior of the car is better monitored by the rearview mirror, which doesn't utilize the outside mirror's capabilities effectively. Hence, maximum visibility is achieved through comprehensive coverage of the side and rear areas.