Final answer:
A requirements traceability matrix is a table in project management that helps track requirements, their attributes, and their status to define the total scope of the project.
Step-by-step explanation:
The correct answer to the question is a requirements traceability matrix. This is a tool used in project management and systems engineering to document the links between various project components and requirements. It enhances transparency and helps manage the complexity of the requirements by serving as a reference to ensure that each requirement is considered throughout the project's process. By capturing requirements, their attributes, and the status, the requirements traceability matrix ensures the total project scope is defined and that it accounts for all project specifications. It is crucial for tracking the progress of each requirement from inception through to completion.