A risk identified at project start had a response plan. Unforeseen effects increased the risk level. The project manager has an efficient idea to address the new risk, but it differs from the original mitigation plan. What should the project manager do?

The project manager should submit the new risk response plan to stakeholders for their review because risk responses, especially those that deviate from the original plan or involve significant changes, require stakeholder approval. This ensures transparency, maintains alignment with project objectives, and secures necessary buy-in. Obtaining management approval before stakeholder review is premature; stakeholders, including the sponsor, are key decision-makers for significant plan changes. Implementing the new response immediately without approval bypasses critical governance processes and could lead to unintended consequences or stakeholder dissatisfaction. While the management reserve might be used for unforeseen risks, the immediate step is to propose and gain approval for the new response plan, which may or may not involve the management reserve depending on its cost implications.