Which of the following acts is NOT prohibited for licensure?

Running a chiropractic operation when licensed is not prohibited because it is an essential function of being a licensed chiropractor. Licensed chiropractors have the legal authority to practice their profession and manage their own practices. This includes treating patients, operating a practice, and offering chiropractic services within the boundaries of the laws and regulations governing the profession.

In contrast, the other acts listed are violations of licensure laws. Practicing without a valid license, claiming to be a chiropractor without a license, and using a fraudulent license all involve misrepresentation or illegal practice, which can result in disciplinary action or criminal charges. Thus, engaging in any of these actions is prohibited, while effectively operating a practice is a core right of licensed professionals.