When you assess a solution, what you are actually looking for is to determine the value of the proposed solution to the stakeholder requirements. This is the main purpose of the solution assessment and validation knowledge area, which involves measuring and evaluating the performance and benefits of the solution, and ensuring that it meets the stakeholder needs and expectations12. Value is defined as the worth, importance, or usefulness of something to a stakeholder within a context3. To determine the value of the proposed solution, you need to identify and analyze the value proposition, the value drivers, the value measures, and the value delivery4. The other options are not what you are actually looking for when you assess a solution, but rather aspects that may contribute to the value of the solution, such as the quality (B), which is the degree to which a solution meets the requirements and delivers the expected benefits5, the cost ©, which is the amount of resources expended or consumed to implement and operate the solution, or the accuracy (D), which is the extent to which a solution represents the true or exact state of the problem or the need. References: Business Analysis Expert Certification, CCBA® | IIBA®, Certification of Capability in Business Analysis™ (CCBA®), Business Analysis Certification Competencies, CCBA® | IIBA®, The Ultimate Guide to Business Capability Analysis, CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, [Certification of Capability in Business Analysis (CCBA®) - Simplilearn], [A GUIDE TO THE BUSINESS ANALYSIS BODY OF KNOWLEDGE]