What is a key benefit of a system requirement traceability matrix (RTM)?

A system requirement traceability matrix (RTM) is a critical tool used in systems analysis and design, primarily because it helps maintain focus on delivering quality software. The RTM links requirements throughout the project lifecycle, ensuring that every requirement is addressed in the development process. This traceability allows teams to verify that all specified requirements are not only implemented but also tested and validated.

By keeping track of which requirements have been fulfilled and how they relate to both design and testing phases, the RTM is instrumental in identifying gaps or missing features early in the development process. This contributes to the overall quality of the software because it ensures that every necessary function from the user's perspective is covered and meets the intended user needs. Furthermore, the RTM enables better communication among stakeholders by providing clear visibility into what requirements have been met and where further attention is needed.

The other options do not capture the primary purpose of the RTM effectively. While flexible changes to requirements can occur but they are not the main focus of the RTM. It is not designed to be a user instruction manual nor does it primarily serve as a summary of user feedback; these roles are fulfilled by other documents and processes in the systems engineering methodology.