Which authority must be used for coding the SF-50 when utilizing delegated examining authority?

The correct choice is B. The Bureau of Workforce Analytics (BWA) is the authority that should be leveraged for coding the SF-50 when utilizing delegated examining authority. This coding is critical because it ensures that the personnel actions related to hiring and employment adhere to the regulations and standards set forth in the context of delegated examining.

Using BWA provides the necessary guidelines and structures to accurately reflect the hiring action on the SF-50, which is the Notification of Personnel Action. This ensures consistency and compliance with the operating procedures required by federal agencies. BWA focuses on workforce analytics and its data is essential for understanding and applying best practices in personnel management.

The other authorities mentioned may have roles in the overall human resources processes but do not specifically pertain to coding the SF-50 in the context of delegated examining authority. OPM, for instance, oversees federal employment but coding specifics fall under the purview of the BWA in this scenario.