Final answer:
Professionals must display their license or certificate at their practice location. If unable, they must follow an alternative method to show they are qualified.
Step-by-step explanation:
The question pertains to the requirements that professionals holding certain licenses or certificates have to meet regarding the public display of their credentials. The blank spaces indicate that the required action is to display the license or certificate in a location that is visible to the public at the professional's place of practice. If the licensee or certificate holder is unable to display the license or certificate, then the individual must adhere to a specified alternative requirement, which could involve providing proof of licensure upon request or notifying the appropriate authority. The specifics of these requirements can vary depending on the jurisdiction and the professional field. These regulations ensure that clients and consumers can verify the professional's qualifications to provide services in their respective areas.