Final answer:
The Army must submit a formal loss report through Records Management Directorate to HQDA. The other entities like DoD, NARA, and OSD may have different roles, but the direct report for a loss within the Army goes to the HQDA.
Therefore , the correct answer options is a)
Step-by-step explanation:
The student is asking about the procedural requirements within the United States Army for reporting a formal loss. Specifically, the Army is required to submit a formal loss report through Records Management Directorate to HQDA. This indicates the requirement to report to the Headquarters, Department of the Army.
The other options listed: DoD (Department of Defense), NARA (National Archives and Records Administration), and OSD (Office of the Secretary of Defense) may be involved in other processes or might receive reports from the Army, but in the context of Army loss reporting, the direct report is submitted to HQDA.