A project manager works with a multifunctional team.

In a situation where there is a disagreement about the development approach, the project manager should promote informed decision-making. Reviewing lessons learned from previous similar projects can provide evidence-based guidance. This also helps balance opinions and encourages collaboration and consensus, which is consistent with team empowerment and stakeholder collaboration.

PMBOK® Guide – Seventh Edition and Agile Practice Guide both recommend using lessons learned and knowledge management to guide decisions and improve outcomes.

Option A is directive and ignores team input.

Option B is vague and does not resolve the issue.

Option D may be helpful but skips team collaboration and lessons learned.