Frequent feedback is key to agile success. According to the PMI Agile Practice Guide (Section 5.3: Sprint Review and Feedback) and Mike Griffiths’ PMI-ACP Exam Prep Book (Chapter 4: Stakeholder Engagement), the sprint review (demo) is the primary event designed to obtain feedback from stakeholders. If stakeholders are unresponsive, increasing the opportunities for engagement, such as by scheduling more demos or review checkpoints, encourages their involvement.

Option D is correct: demos provide structured opportunities to collect feedback.

Option A might increase delivery cadence but doesn ' t guarantee feedback.

Option B is inappropriate—daily stand-ups are for the team.

Option C violates role responsibilities—estimation is owned by the team, not stakeholders.