Explanation
Structured walkthroughs are meetings that help determine if the stakeholders agree that their needs are being met with the identified requirements.
Answer A is incorrect. Risk analysis reviews identified risks in the requirements to determine the probability
and impact of the risk event.
Answer B is incorrect. Prototyping is used to gain user agreement with the proposed solution and
requirements for the solution.
Answer C is incorrect. Stakeholder management is not a technique that is used as part of validating
requirements.

Explanation
Data modeling is the best answer, as this approach describes the concepts and relationships relevant to the solution or business domain.
Answer A is incorrect. The data flow diagram shows how information flows through a system.
Answer B is incorrect. The business rules analysis examines how business rules may be implemented and
managed in an organization.
Answer D is incorrect. Functional decomposition is the process of breaking down the scope into smaller,
more manageable deliverables. It ensures that all of the active characteristics of the proposed solution are identified, documented, and capable of being tracked.