Final answer:
A licensee must notify the Commission by certified mail within 10 days if a criminal or civil complaint involving a real estate transaction has been filed against them.
Step-by-step explanation:
If a criminal or civil complaint involving a real estate transaction has been filed against a licensee, they must notify the Commission by certified mail within 10 days. These regulations are designed to ensure transparency and accountability in real estate practices. Notifying the Commission promptly allows them to take necessary actions to protect the public and maintain the integrity of the real estate industry.