Explanation
Centralizing the risk management function enables the organization to have a consistent approach to reporting risks and their impacts. This allows for better monitoring of the impact against the overall project risk exposure, which helps in making informed decisions and allocating resources effectively.
According to the PMI-RMP Exam Content Outline1, one of the tasks in the domain of risk governance is to
"establish and maintain a centralized risk management function to support the project and organizational objectives". A centralized risk management function can help resolve the problem of inconsistent risk reporting by providing a common framework, methodology, and standards for risk management across the organization. One of the benefits of centralizing the risk management function is that it allows monitoring the impact of individual project risks against the overall project risk exposure, as well as the organizational risk appetite and tolerance. This can help the CEO and other senior management to make informed decisions and allocate resources accordingly. Therefore, the best answer is B.
References: 1: PMI-RMP Exam Content Outline, page 6.

Variance analysis is a method used to compare planned project performance against actual performance.
Since the project sponsor has requested a performance report for the entire 10-year initiative, variance analysis would allow the risk manager to identify discrepancies between what was planned and what has been achieved over the course of the project. This analysis is crucial for understanding performance trends, cost deviations, schedule variations, and overall project health.
PMI's guidelines support the use of variance analysis in performance reporting as it provides insights into how well the project is adhering to its planned budget, schedule, and scope.

The risk owner should implement the secondary risk response, as it is now being tolerated, and update the project documents accordingly. They should also update and communicate the assessments of the secondary risk ' s impact to ensure everyone is aware of the situation.
According to the PMI-RMP Handbook1, the risk owner is responsible for implementing the risk response plan and monitoring the risk and its secondary risks. Therefore, the risk owner should take the following two actions when the secondary risk emerges:
Implement the secondary risk response and update the project documents. This action is consistent with the risk response strategy of tolerance, which means accepting the risk and its consequences. The risk owner should execute the planned response for the secondary risk, such as contingency plans or fallback plans, and update the relevant project documents, such as the risk register, the risk report, and the lessons learned register, to reflect the current status and impact of the risk.
Update and communicate assessments of the secondary risk's impact. This action is consistent with the risk monitoring and control process, which involves tracking the identified risks, evaluating their impact and probability, and reporting the risk information to the appropriate stakeholders. The risk owner should reassess the secondary risk's impact on the project objectives, such as scope, schedule, cost, and quality, and communicate the results to the project manager and other relevant stakeholders, such as the sponsor, the customer, and the team members.
PMI-RMP Handbook1
PMBOK Guide, 6th edition, Chapter 11: Project Risk Management2