Explanation
Customer metrics on the existing system are an input into solution evaluation and decision making in this context, as they provide a baseline for measuring the performance and value of the new solution. The business analyst can use these metrics to compare the existing system with the new solution and assess how well the new solution meets the customer needs and expectations. A cost-benefit analysis of the existing system is not an input into solution evaluation and decision making, as it does not reflect the customer perspective or satisfaction with the system. Technical readiness of the development team is not an input into solution evaluation and decision making, as it does not relate to the quality or effectiveness of the new solution. A new solution design specification is not an input into solution evaluation and decision making, as it describes how the new solution will be built, not how it will perform or deliver value. References: Business Analysis for Practitioners: A Practice Guide, page 176-177; PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline, page 20.

Explanation/Reference:

Explanation
Validating the requirements is a key activity to reduce the risk of rework, especially for a project with a tight timeline and a lean budget. Validating the requirements means ensuring that they are aligned with the business needs, objectives, and expectations of the stakeholders, and that they are clear, complete, consistent, feasible, and testable. Validating the requirements can help the business analyst and the project team to identify and resolve any errors, gaps, conflicts, or ambiguities in the requirements before they are implemented, and to avoid any unnecessary changes or rework later in the project lifecycle. References: PMI Professional in Business Analysis (PMI-PBA)
Examination Content Outline1, page 20; Business Analysis for Practitioners:
A Practice Guide2, page 100.