Explanation: According to the CGEIT exam content outline1, one of the subtopics under the domain of Risk Optimization is “Risk Ownership and Accountability”. This subtopic covers the process of assigning and communicating the roles and responsibilities for risk management to the appropriate stakeholders, such as business owners, process owners, or risk owners. Risk ownership is the best way to enable effective enterprise risk management (ERM), as it ensures that the risks are identified, assessed, treated, monitored, and reported by the people who have the authority, knowledge, and interest to manage them. Risk ownership also fosters a risk-aware culture and promotes accountability and transparency for risk management23.
The other options are not as effective as risk ownership to enable ERM. A risk register is a tool that records and tracks the information about the risks, such as their description, category, impact, likelihood, status, and action plan. A risk register is useful for documenting and communicating the risks, but it does not ensure that the risks are managed properly by the responsible parties4. A risk tolerance is a measure that defines the acceptable level of variation from the expected outcome or objective. A risk tolerance is important for setting the boundaries and criteria for risk management, but it does not guarantee that the risks are aligned with the business strategy and objectives5. A risk training is a program that provides education and awareness on risk management concepts, methods, and tools. A risk training is beneficial for enhancing the skills and competencies of the risk management staff and stakeholders, but it does not ensure that they perform their roles and responsibilities effectively6.
References: 1: CGEIT Exam Content Outline | ISACA1 2: Risk Ownership - ISACA2 3: Risk Ownership: The First Step in Enterprise Risk Management - ERM3 4: What Is a Risk Register? Explanation & Free Template - ProjectManager.com 5: What Is Risk Tolerance? Definition & Examples - Talend 6: IT Risk Management Training | ISACA