The BCS Business Change Lifecycle (which governs the entire change process from initial alignment to final benefit verification) typically comprises five key stages: Alignment, Definition, Design, Implementation, and Realisation. Realisation is the final, crucial stage where the actual benefits and expected business outcomes from the implemented solution are reviewed, measured, and confirmed against the original Business Case. Options A, B, and C are important activities or concepts that occur within the lifecycle but are not one of the five named stages of the complete end-to-end lifecycle model.

(Reference: BCS Business Analysis Practice -- Business Change Lifecycle)