Final answer:
When a motorist legally changes their name, they must report the change to the MVC within a certain timeframe.
Step-by-step explanation:
In the context of the question, the subject is Law. When a motorist legally changes their name due to marriage, divorce, or a court order, they are required to report this change to the MVC (Motor Vehicle Commission) within a certain timeframe. The exact timeframe may vary depending on the state, so it is important to consult the specific regulations of the state in question.