Which document outlines a program's requirements?

The Capability Development Document (CDD) is the correct choice because it specifically outlines the operational and technical requirements necessary to satisfy an identified capability gap. It serves as a foundational document within the defense acquisition process, defining the needs and expectations for a specific program. This document ensures that all stakeholders have a clear understanding of what the program is intended to achieve, which guides further development, testing, and evaluation.

In contrast, the Capability Statement provides a broad overview of a program's capabilities but lacks the specificity needed for requirements. The Acquisition Strategy Document focuses on the approach for acquiring the required capabilities but does not delve extensively into the specific requirements themselves. Lastly, the Program Management Plan is centered on execution, detailing how the program will be managed and the resources needed, rather than specifying requirements. Thus, the CDD is critical for establishing the program's foundation based on defined needs.