The project manager reviews project risks with the risk manager to update, monitor, and close...

In risk management, when a residual risk is identified, it is crucial to reassess its impact on the project's overall risk profile. Residual risks are those risks that remain even after all mitigation strategies have been applied. According to best practices and the procedures outlined in the documents provided, particularly in the "Risk Management Procedure" and the "Risk Assessment" guidelines, the appropriate steps to manage residual risks involve:

1.     Reassessing the Risk: The first step involves reviewing the impact of the residual risk in the context of existing budget reserves. This ensures that the project has adequate resources to address any potential consequences of the residual risk.

2.     Documenting in the Risk Register: After reviewing the residual risk, it should be documented in the risk register with updated details on its impact and any required actions. This aligns with the standard procedure for managing risks throughout a project's lifecycle as described in the "Consolidated Risk Register" section of the Risk Management Procedure​.

3.     Budget Reserves: Specifically, the focus on budget reserves is crucial because it directly relates to the financial management of risks. According to PMI's Risk Management guidelines and the practices outlined in the provided documents, ensuring that sufficient contingency funds are available to address residual risks is a key aspect of comprehensive risk management. This approach helps in maintaining the financial health of the project while accounting for unforeseen events​.

In summary, option D is the correct answer because it reflects the necessary actions that should be taken when dealing with residual risks: reassessing their impact on budget reserves and ensuring that the risk register is updated to reflect these considerations. This process is vital for maintaining control over the project's risk profile and ensuring that any remaining risks are managed effectively and within the project's financial constraints.