Tounderstand the needs of different user types, agile teams usepersonasandextreme charactersto represent a range of users, including edge cases. According to thePMI Agile Practice Guide (Section 5.2: Requirements and Personas)andMike Griffiths' PMI-ACP Exam Prep Book (Chapter 6: Adaptive Planning), personas help teams build empathy and ensure that stories reflect actual user roles-not just generic assumptions. * Option Dis correct: personas and extreme characters ensureinclusive and realistic story coverage. * Option AandBfocus on communication and sequencing but not user diversity. * Option C(process flows) is more technical and doesn't solve the misalignment with user perspectives.