Final answer:
A vehicle owned or operated by a governmental unit or agency is NOT considered an uninsured vehicle as defined by Part C of the personal automobile policy.
Step-by-step explanation:
The correct answer is d.A vehicle owned or operated by a governmental unit or agency. According to Part C of the personal automobile policy, an uninsured vehicle is one that lacks proper liability insurance coverage or has inadequate coverage to compensate for injuries or damages in case of an accident. However, a vehicle owned or operated by a governmental unit or agency is exempt from being considered an uninsured vehicle.