What legislation authorizes agencies to enter into agreements with other agencies for obtaining supplies or services?

The Economy Act is the correct choice because it specifically provides the authority for federal agencies to enter into agreements with one another to obtain supplies or services. This legislation allows agencies to utilize the resources of neighboring agencies when it is more economical or practical than acquiring those resources independently.

The Economy Act is designed to promote efficiency in government operations by enabling interagency collaboration, which can lead to cost savings and streamlined processes. For example, if one agency has emergency supplies that another agency needs, the Economy Act facilitates the transfer of those supplies, effectively allowing agencies to support one another without the lengthy procurement process typically required for non-interagency contracts.

In contrast, the other legislative options focus on different aspects of federal procurement or administrative processes. The Federal Acquisition Reform Act, for example, was aimed at reforming the acquisition process by reducing regulations and improving efficiency, but it does not address interagency agreements directly. The Competition in Contracting Act emphasizes competition among contractors to ensure fair pricing and quality of services and does not pertain to inter-agency agreements. Lastly, the Administrative Procedures Act governs the processes by which federal agencies develop and issue regulations, but it does not authorize interagency agreements for supplies or services.