Re-using requirements is useful when the requirements are something the organization must do on an ongoing basis, such as complying with regulations, following standards, or meeting customer expectations12. Re-using requirements can save time, cost, and effort, as well as ensure consistency, quality, and traceability of the requirements[3][3]. The other options are not valid reasons for re-using requirements, as they either do not reflect the value or purpose of re-using requirements, such as A, which states that the organization wants to sell the set of requirements to its customers, B, which states that the current solution fails, or D, which states that re-using requirements means tracing the requirements to actual deliverables, or they are not applicable to the CCBA certification, which is based on the BABOK Guide, which does not mention re-using requirements as a technique or a task4. Reference: Business Analysis Expert Certification, CCBA| IIBA, Certification of Capability in Business Analysis (CCBA), Business Analysis Certification Competencies, CCBA| IIBA, A GUIDE TO THE BUSINESS ANALYSIS BODY OF KNOWLEDGE