Who is responsible for the administrative oversight of subordinate commands?

The correct answer highlights the role of the Local Element in managing and overseeing operations within subordinate commands. The Local Element serves as the operational layer that connects directly with the subordinate commands, ensuring that they adhere to established COMSEC policies and procedures.

This oversight includes implementing security protocols and managing communication security issues at a more localized level, allowing for more effective management and direct supervision. The responsibility here emphasizes the importance of localized governance in maintaining the integrity and security of communications within a specific area or command.

In contrast, the other choices involve different roles that may not be as directly tied to the hands-on management of subordinate commands. For instance, the COMSEC Manager typically focuses on broader security measures across the organization, while the Commanding Officer holds leadership responsibility overall but may not engage in the daily administrative tasks related to subordinate commands. The Headquarters Staff usually deals with higher-level policy and strategy rather than the direct oversight of individual subordinate units.