Final answer:
The accumulation of continuing education units is typically required for professional license renewal and varies by state; the specific renewal period must be determined by the relevant licensing board or regulatory authority.
Step-by-step explanation:
The question likely pertains to rules regarding the accumulation of continuing education units (CEUs) for professionals, which are often required for license or permit renewal in various fields, including engineering. In this context, such requirements are usually part of maintaining a professional license and may vary by state, as each state's licensing board sets the specific CEU requirements. These requirements are usually aligned with the renewal period assigned by the relevant professional board.
Though the specific license or permit renewal period is not stated in the question, it appears to be asking during which period the licensee should have accumulated the required CEUs. This can be annual, biennial, or another set term as determined by the regulatory board. Without additional context or direct reference, an accurate answer cannot be provided; this seems to be a verbatim clause that needs the correct prior reference to be answered effectively. Nevertheless, the question structure is reminiscent of a legal or regulatory framework, where the terms such as 'first', 'second', 'third', or 'fourth' may reference sequential renewal periods after initial licensure.