Which of the following can lead to a driver's license suspension in Massachusetts unrelated to driving?

Failure to register as a sex offender is indeed a valid reason for a driver's license suspension in Massachusetts, independent of driving behavior. The state takes compliance with sex offender registration laws seriously, and failure to comply can result in various legal consequences, including the suspension of a driver's license. This is part of the broader measures aimed at public safety and ensuring that individuals follow legal requirements designed to protect the community.

Unpaid parking tickets may lead to other civil penalties such as fines or a hold on vehicle registration, but they typically do not directly result in a driver's license suspension. Minor drug offenses might carry legal consequences including fines or other penalties; however, they do not automatically trigger a license suspension unless they are connected to more serious violations. Medical issues can indeed impact one's ability to drive, but typically result in a reevaluation rather than a direct suspension unless they affect driving capability and safety.