Inaccurate risk ratings would most likely cause management to unknowingly accept excessive risk, as they may not reflect the true level of risk exposure and impact, and may lead to inappropriate risk responses or decisions. Satisfactory audit results, risk tolerance being set too low, and lack of preventive controls are not the most likely causes, as they may indicate a different risk management issue, such as over-reliance on audit assurance, misalignment of risk tolerance and appetite, or insufficient risk mitigation, respectively. References = CRISC Review Manual, 7th Edition, page 109.