Reviewing which of the following would provide the MOST useful information when preparing to evaluate the effectiveness of existing controls?

Previous audit reports provide historical data, but may not reflect the current relevance or effectiveness of controls against today's risk profile.

Control objectives define what a control should achieve, which is essential context, but reviewing changes in risk profiles shows why a control's effectiveness needs evaluation now.

Risk responses in the risk register detail the planned actions for risks, but understanding changes in the risk profile informs which controls tied to those responses should be prioritized for effectiveness evaluation.

Changes in risk profiles directly indicate shifts in the organization's threat landscape or vulnerabilities, making it most useful to evaluate controls that mitigate these evolving risks to ensure they remain effective and relevant.