What must a person NOT possess in order to perform work requiring certification or licensure?

The correct answer highlights that an individual with expired certification should not perform work requiring certification or licensure. Expired certification indicates that the person has not maintained up-to-date credentials, which are necessary to ensure that they are knowledgeable about current practices, regulations, and standards in their field. Certifying bodies often require professionals to engage in continuing education and regular renewal processes to uphold the integrity and competency of certified individuals. Therefore, without a valid or current certification, the individual lacks the necessary credentials to legally and effectively carry out their responsibilities in a professional setting.

While having active or temporary certification might allow a person to perform certain tasks, expired certification indicates a lapse in the maintenance of credentials. Thus, it limits the ability to provide services that meet the standards required by the profession, which is essential for ensuring quality and adherence to legal requirements.