Which document reflects how many people are authorized to accomplish a specified job, workload, mission, or program?

The Unit Manpower Document (UMD) is the correct choice because it serves as a comprehensive record that outlines the manpower authorizations for a unit. This document specifies the number of personnel authorized to perform various jobs, workloads, missions, or programs within the unit. It provides a structured overview of the different roles and positions that the unit is authorized to have, along with details about the skills and qualifications required for each role.

The UMD is essential in ensuring that a unit has the proper staffing to meet its operational requirements and effectively accomplish its mission. By detailing authorized positions, the UMD aids in resource allocation and helps leaders identify gaps in manpower that may need to be addressed for mission success.

Other options, while related to personnel management, do not specifically capture the broad authorization spectrum reflected in the UMD. The Personnel Authorization Record typically deals with individual personnel assignments rather than unit-wide authorizations. The Workforce Allocation Sheet can be used for planning and distributing workforce resources but does not outline authorized positions in the same formal manner as the UMD. The Job Assignment Report generally focuses on tasks assigned to individuals rather than the overall authorization for roles within a unit's structure.