The best way to facilitate the implementation of data classification requirements is to assign a data owner. A data owner is a person who has the authority and responsibility for defining, classifying, and protecting the data. A data owner can help to facilitate the implementation of data classification requirements by providing the criteria, categories, roles, and procedures for classifying the data according to its sensitivity, value, and criticality. A data owner can also ensure that the data is handled and stored appropriately, and that the data classification policy is enforced and monitored. The other options are not as effective as assigning a data owner, as they are related to the prevention, audit, or control of the data, not the classification or protection of the data. References = Risk and Information Systems Control Study Manual, Chapter 4: Risk and Control Monitoring and Reporting, Section 4.4: Key Control Indicators, page 211.

The first step is to assess whether the ineffective controls result in residual risk exceeding the risk appetite.
This establishes the urgency and priority of remediation efforts and ensures alignment with enterprise risk thresholds, reflecting principles of Risk Assessment and Prioritization.

The primary reason to implement a formalized risk taxonomy is to reduce subjectivity in risk management, as it provides a common and consistent language and structure for identifying, classifying, and reporting risks, and facilitates the comparison and aggregation of risks across the organization. The other options are not the primary reasons, as they are more related to the outcomes, benefits, or drivers of risk management, respectively, rather than the reason for risk management. References = CRISC Review Manual, 7th Edition, page 100.

An IT risk register is a document that records and tracks the identified IT risks, their likelihood, impact, and mitigation strategies. It is a living document that needs to be updated regularly to reflect the current risk profile of the organization. One of the situations that would require updates to the IT risk register is the discovery of an ineffectively designed key IT control, as this would increase the likelihood or impact of the related IT risk. Management review of key risk indicators (KRIs), changes to the team responsible for maintaining the register, and completion of the latest internal audit are not reasons to update the IT risk register, as they do not affect the identified IT risks or their mitigation strategies. References = [CRISC Review Manual (Digital Version)], page 97; CRISC: Certified in Risk & Information Systems Control Sample Questions, question 198.

The organization control environment is most effective when the controls perform as intended. The controls are the mechanisms or measures that are designed and implemented to prevent, detect, or correct the risks that may affect the achievement of the objectives. The controls perform as intended when they provide reasonable assurance that the risks are mitigated or managed to an acceptable level, and that the objectives are met or exceeded. The performance of the controls can be measured and evaluated by using key performance indicators (KPIs) and key risk indicators (KRIs). The other options are not as indicative of the effectiveness of the control environment, as they are related to the review, implementation, or efficiency of the controls, not the performance or assurance of the controls. References = Risk and Information Systems Control Study Manual, Chapter 2: IT Risk Assessment, Section 2.3: IT Control Assessment, page 69.