Comprehensive and Detailed The BA shouldresolve differences of opinion among stakeholdersto ensureconsensus on requirementsbefore proceeding. BABOK Guide (Chapter 4.3 - Manage Stakeholder Collaboration)emphasizes that BAs mustmediate conflicting viewpoints and facilitate agreementto define accurate requirements. Impact analysis (Option B)is useful later when assessing changes. Scope estimation (Option C)is necessary but should be based on agreed-upon requirements. Feasibility study (Option D)is important for assessing viability but does not address stakeholder misalignment.