A risk register is a document that is used as a risk management tool to identify and track risks that may affect a project or an organization1. A risk register also includes information about the risk responses,which are the actions taken or planned to mitigate or eliminate the risks2. Therefore, a risk register provides the best evidence that risk responses have been executed according to their risk action plans, as it shows the status and progress of the riskresponses, the results and outcomes of the risk responses, and the feedback and lessons learned from the risk responses3. A risk policy review is not the best evidence that risk responses have been executed according to their risk action plans, as it does not provide specific information on the risk responses. A risk policy review is a process that involves checking and verifying that the organization’s risk management policies are up to date, relevant, and effective4. A risk policy review can help to identify and address any gaps or issues in the risk management policies, but it does not show the details and performance of the risk responses. A business impact analysis (BIA) is not the best evidence that risk responses have been executed according to their risk action plans, as it does not provide specific information on the riskresponses. A BIA is a process that identifies and evaluates the potential effects of a disruption on the critical functions and processes of an organization5. A BIA can help to forecast the impacts of a risk event, but it does not show the actions and outcomes of the risk responses. A control catalog is not the best evidence that risk responses have been executed according to their risk action plans, as it does not provide specific information on the risk responses. A control catalog is adocument that lists and describes the controls that are implemented or planned to manage the risks within an organization6. A control catalog can help to document and communicate the controls, but it does not show the status and results of the risk responses. References = 1: Risk Register: A Project Manager’s Guide with Examples [2023] • Asana2: Risk Response Strategy and Contingency Plans - ProjectManagement.com3: Risk Register: Examples, Benefits, and Best Practices4: A brief guide to assessing risks and controls | ACCA Global5: Using Business Impact Analysis to Inform Risk Prioritization and Response6: [Control Catalogue - ISACA]