In the context of PMP objectives and the PMBOK guide, the first action in response to an identified risk, such as the sale of duplicate lottery numbers, is to review the project’s risk management plan. This plan should include previously identified risks and their corresponding response strategies. If the issue of duplicate numbers was anticipated, the project manager should follow the established action plan to address it. This aligns with the PMBOK’s emphasis on proactive risk management, which includes planning for risks and having response strategies ready to implement when needed123.