Which document serves as the authorization for nondeployable units?

The correct choice indicates that the Table of Distribution and Allowances (TDA) serves as the authorization for nondeployable units. The TDA outlines the structure and equipment authorized for specific nondeployable units, specifying their mission, organization, and the number and types of personnel and equipment they are permitted to have. This is essential for ensuring that nondeployable units are appropriately resourced and organized, while also being distinct from deployable units that follow different regulations and preparations related to deployment.

The other documents mentioned have different purposes. The Common Table of Allowances (CTA) typically outlines items that units are authorized to support their functions, but it does not serve as authorization for unit structure. Similarly, the Modified Table of Organization and Equipment (MTOE) is used for deployable units, detailing the personnel and equipment required for their deployment. The Army Prepositioned Stock Records (APSR) pertains to the management of stockpiles of military equipment and supplies but is not a direct authorization document for unit organization. Thus, the TDA is specifically designed for the unique requirements and authorization of nondeployable units.