What is the focus of requirements architecture in a design?

The focus of requirements architecture in a design primarily concerns the interaction of requirements and system models. Requirements architecture serves as a framework that outlines how various requirements relate to each other and how they are aligned with the overall system design. This architecture helps ensure that all requirements are accounted for and that they function together cohesively within the larger system framework.

Understanding these interactions is critical for creating a system that meets the needs of stakeholders and fulfills business objectives. By establishing clear relationships among requirements, designers can reduce ambiguity, identify potential conflicts, and ensure that no important aspects are overlooked in the development process. This structured approach facilitates effective communication and collaboration among team members, leading to a more refined and successful outcome in system development.

The other choices do not fit the context of requirements architecture. They focus on aspects such as pricing, individual roles, and training, which are not directly related to the interaction of requirements in the design process.