Which of the following is the BEST approach to mitigate the risk associated with a control deficiency?

Performing a business case analysis helps in decision-making but does not directly mitigate the risk associated with an existing control deficiency.

Implementing compensating controls is the most direct and effective way to mitigate risk stemming from a control deficiency. When a primary control is found to be inadequate or absent, a compensating control acts as an alternative measure to reduce the specific risk to an acceptable level until the primary control can be fixed or replaced.

Conducting a control self-assessment (CSA) identifies control deficiencies but does not, by itself, mitigate the risk; it's an assessment tool, not a mitigation strategy.

Building a provision for risk (e.g., financial reserve) addresses the financial impact of a risk event but does not prevent or reduce the likelihood or impact of the risk itself from a control perspective.