Final answer:
A Certificate of Fitness Holder must maintain their certificate by ensuring it is valid, accessible, and compliant with the law, which includes timely renewals and adherence to safety protocols.
Step-by-step explanation:
A Certificate of Fitness Holder must keep his or her certificate valid, accessible, and in compliance with the relevant laws and regulations. Maintaining a certificate of fitness often includes periodic renewal through continued education or reexamination, adhering to industry-specific safety protocols, and keeping it unexpired. It is essential for individuals in professions that require such certifications to stay informed about the latest standards and renewal procedures to ensure their credentials remain in good standing.