Which of the following is required to operate a vehicle in Massachusetts?

To legally operate a vehicle in Massachusetts, individuals must possess a driver's license that demonstrates their authorization to drive and valid registration for the vehicle they are operating. This ensures that the driver has passed the necessary tests and meets the minimum requirements to safely drive on public roads, while the vehicle registration confirms that the vehicle is properly registered with the state and is insured according to state law.

Having only completed a written test without a valid license does not meet the legal requirements to drive. Similarly, prerequisites regarding the age of the vehicle or having a friend as a passenger do not impact the legal requirements necessary for operating a vehicle safely and legally in Massachusetts.