Risk identification should be an ongoing process throughout the project lifecycle. Encouraging project team members to proactively identify risks allows for continuous risk management and the development of appropriate response strategies as new risks emerge.
According to the PMI Risk Management Professional (PMI-RMP)®Examination Content Outline1, one of the tasks in the domain of Risk Identification is to ensure that project team members proactively identify risks throughout the project life cycle, using various tools and techniques, to enable planning for possible risk response strategies1. Risk identification is an iterative process that should be performed regularly and frequently throughout the project, as new risks may emerge or existing risks may change due to internal or external factors2. The project manager should involve the project team members and other relevant stakeholders in the risk identification process, as they may have different perspectives, expertise, and insights on the project risks3. The project manager should not identify risks only at the project's midpoint for the stakeholders to review them, because that would be too late and ineffective to manage the risks that may have already occurred or escalated4. The project manager should not identify risks at the beginning of the project because the risk posture will not change, because that would be unrealistic and imprudent to assume that the project environment and conditions will remain static and predictable5. The project manager should not delegate risk identification to each team member and have them record the risks on separate risk registers for their areas, because that would create inconsistency, duplication, and fragmentation of the risk information, and prevent a holistic and integrated view of the project risks. References: 1: PMI Risk Management Professional (PMI-RMP)®Examination Content Outline, page 82: A Guide to the Project Management Body of Knowledge (PMBOKGuide) - Sixth Edition, page 3983: A Guide to the Project Management Body of Knowledge (PMBOKGuide) - Sixth Edition, page 3994: Risk Identification: When and How Often to Do It During the Project Life Cycle5: Risk Management: Why Is It Important?. : Risk Register in Project Management - Project Management Academy.

The project manager should consider stakeholders' positions and opinions regarding the project's output when engaging stakeholders. This approach helps to address stakeholders' concerns, expectations, and potential objections, and it can lead to better decision-making and more successful project outcomes. It is important for the project manager to maintain open communication with stakeholders and to be responsive to their needs and perspectives.
According to the PMI Risk Management Professional (PMI-RMP)® Examination Content Outline, one of the tasks under the domain of stakeholder engagement is to "engage stakeholders by communicating with them to understand their positions and opinions regarding the project's output, and to ensure that their interests are considered in the risk management process" (Task 1.3). This implies that the project manager should consider stakeholders' perspectives and expectations when engaging them, and not ignore, exclude, or impose on them.
Therefore, option D is the correct answer.
Option A is incorrect because not all stakeholders need to be involved in the project's governance, which is the set of policies, processes, and procedures that define how the project is managed and controlled. The project's governance should be determined by the project sponsor and the project management office (PMO), and only include those stakeholders who have authority and responsibility for the project's success.
Option B is incorrect because communicating response strategies to all stakeholders is not a stakeholder engagement activity, but a risk communication activity. The project manager should communicate response strategies to the relevant stakeholders who are assigned to implement or monitor them, and not to all stakeholders indiscriminately.
Option C is incorrect because ignoring any risks beyond stakeholders' tolerance is not a stakeholder engagement activity, but a risk attitude activity. The project manager should identify and assess all risks that may affect the project's objectives, regardless of stakeholders' tolerance levels. The project manager should also consult with stakeholders to determine their risk appetite, threshold, and attitude, and use this information to prioritize and respond to risks accordingly.
References: PMI Risk Management Professional (PMI-RMP)® Examination Content Outline, pages 5-61

The risk management plan is a document that describes how risk management activities will be structured and performed on a project. It defines the roles and responsibilities, risk categories,risk appetite and thresholds, risk identification and analysis methods, risk response strategies, risk monitoring and reporting mechanisms, and risk governance mechanisms1. The risk management plan should be aligned with the project management plan, which defines the project scope, schedule, cost, quality, and other aspects2. When an organization decides to accelerate a key project, it means that the project objectives, assumptions, constraints, and environment have changed. This will affect the risk exposure and profile of the project, as well as the risk management approach and resources. Therefore, the first action for the project risk manager to take is to revise the risk management plan to reflect the new situation and ensure that the risk management process is still effective and efficient. Revising the risk management plan may involve updating the risk categories, risk appetite and thresholds, risk identification and analysis methods, risk response strategies, risk monitoring and reporting mechanisms, and risk governance mechanisms to suit the accelerated project. The project risk manager should also communicate the revised risk management plan to the relevant stakeholders and obtain their approval and support1. Ensuring sufficient resources are available, updating the risk register, and meeting with the project's stakeholders are all important actions to take when accelerating a project, but they are not the first action. These actions should be done after revising the risk management plan, as they depend on the updated risk management approach and process. For example, the project risk manager may need to allocate more resources to risk management activities, identify and analyze new or changed risks, implement new or modified risk responses, and report therisk status and performance to the stakeholders based on the revised risk management plan1. References: 2, 1.

A risk checklist is a tool for identifying risks based on historical information and knowledge from similar projects. It is a list of potential risk sources or categories that can be used to prompt the project team to consider possible risks that may affect the project. A risk checklist should include information that is relevant and useful for identifying risks, such as lessons learned from similar completed projects and previous project risks that may be relevant to this project. These two pieces of information can help the project manager to learn from past experiences and avoid repeating the same mistakes or overlooking the same threats or opportunities. A risk checklist should not include information that is not directly related to risk identification, such as budget variance data from previously completed projects, project scope and cost management plans from previous projects, or stakeholder analysis metrics from projects with similar risk profiles. These pieces of information may be useful for other aspects of project management, such as planning, monitoring, or controlling, but they are not helpful for identifying risks on a project. References: PMI. (2017). A Guide to the Project Management Body of Knowledge (PMBOK Guide) - Sixth Edition. Chapter 11: Project Risk Management, p. 397. 5 Lessons learned and previous project risks are valuable sources of information for creating a risk checklist.
They provide insights into potential risks that may impact the current project and help the project manager develop appropriate risk responses. Budget variance data, project scope and cost management plans, and stakeholder analysis metrics, although useful, are not directly related to risk identification. (Reference: Project Management Institute. A Guide to the Project Management Body of Knowledge (PMBOK Guide) - Sixth Edition, Section 11.2)

The risk manager should first update the risk register with the new risk identified by the vendor. This will help in keeping track of all the risks associated with the project and facilitate the subsequent planning and management of the risks.
The risk manager should update the new risk in the risk register, which is a project document that records the details of all identified risks, including their description, category, cause, probability, impact, and response strategy. Updating the risk register is the first step to acknowledge the existence of the new risk and to document its characteristics and potential effects on the project objectives. The risk register can then be used as an input for the Plan Risk Responses process, where the risk manager can develop appropriate actions to address the new risk. References: PMI, A Guide to the Project Management Body of Knowledge (PMBOK® Guide), Sixth Edition, 2017, p. 397, 441.