The programme is in the ‘embed the outcomes’ process at the end of Tranche 2.

Comprehensive and Detailed 200 to 250 words of Explanation From Exact Extract of project-programme-and-portfolio-management of 5th Edition MSP:

The 'Embed the outcomes' process is where the focus shifts from delivering technical capabilities to ensuring that those capabilities are integrated into business-as-usual (BAU). A key activity within this process is 'Adopt the capabilities', which involves supporting the business through the transition and ensuring that old ways of working are retired.

In this scenario, the staff are resisting the change by maintaining a "safety net" (the old system). According to MSP 5th Edition, to successfully embed a change, the programme must often "burn the bridges" to the old state once the new system is proven to be functional. Option D is the correct answer because it addresses both the technical and human aspects of the transition. Removing access to the old system forces the adoption of the new process, while providing support ensures that staff feel capable and confident in the new environment. Simply reporting on benefits (Option A) or encouraging knowledge sharing (Option C) will not resolve the issue if the old system remains an available option for those resistant to change. The Business Change Manager (BCM) must lead this transition, ensuring that the organization moves fully into the future state described in the Target Operating Model, thereby allowing the benefits to be fully realized.