Just as a team reaches a mutual consensus on a preferred design, a stakeholder submits...

This question belongs to the Process domain because it concerns handling scope change through an appropriate delivery and control mechanism. PMI materials emphasize applying scope management and change control principles to a project, and agile-oriented PMI guidance also emphasizes incremental delivery of working products and features for stakeholder evaluation.

Among the options given, the best answer is to start the process to include the new features in the next iteration. This respects the fact that the request has business value, but it also avoids disrupting the team’s current agreed design work. Option B and Option D are clearly incorrect because they bypass formal control and governance. Option C is also wrong because the team should not add features informally just to impress the client. PMP-style reasoning favors handling requested changes in a controlled way, evaluating them, and introducing them through the proper planning cadence rather than injecting them immediately into work already aligned by the team. In an iterative environment, the next iteration is the most suitable place to consider and plan those additions.