Final answer:
It is a violation of the real estate license law for a broker to engage in professional real estate activity without a license, during a license suspension or revocation, or while associated with an unlicensed broker. The correct choice is D. All of the above.
Step-by-step explanation:
It is a violation of the real estate license law for a broker to conduct professional real estate activity without a license, while their license is suspended or revoked, or while they are associated with a broker who does not have a license. Therefore, the correct answer to the question is D.
All of the above. Operating without a license or during a period of suspension or revocation is illegal and can result in legal consequences, fines, and potentially being barred from obtaining a license in the future. Additionally, affiliating with an unlicensed broker can also lead to similar penalties and is against real estate licensing regulations.