Agile encourages active stakeholder engagement, especially in activities such as sprint reviews and product increment demonstrations. When stakeholders want to be actively involved in reviewing increments, the best course of action is to promote that involvement through events that provide transparency, promote feedback, and ensure alignment with business goals.

According to the Agile Practice Guide, active stakeholder participation is a fundamental component of adaptive approaches. Sprint reviews provide opportunities for inspection and adaptation, and key stakeholders are encouraged to attend.

Option A is useful for general stakeholder mapping but doesn't promote involvement.

Option B addresses documentation, not action.

Option C is too early-stage; they already expressed their needs (involvement).