The correct answer is D . BABOK's requirements classification schema defines business requirements as statements of goals, objectives, and outcomes that describe why a change has been initiated . This is the exact wording used by IIBA, so business requirements are the best and fully correct choice here.
Option A is incorrect because stakeholder requirements describe the needs of stakeholders that must be met to achieve the business requirements. They help bridge the gap between business requirements and more detailed solution requirements, but they do not primarily express why the change was initiated.
Option B is incorrect because solution requirements describe the capabilities and qualities a solution must have in order to meet stakeholder and business needs. They focus on what the solution must do or how well it must perform, not on the original reason for the change.
Option C is incorrect because transition requirements describe temporary capabilities needed to move from the current state to the future state, such as migration, training, or implementation support. They do not state the goals and objectives behind the change.