Which of the following would provide the BEST evidence of an effective internal control environment/?

Risk assessment results identify potential threats and vulnerabilities but do not directly confirm the effectiveness of controls implemented to mitigate those risks.

Adherence to governing policies indicates compliance, but without independent verification, it doesn't definitively prove the actual effectiveness of the controls in practice.

Regular stakeholder briefings communicate information but do not inherently provide verifiable evidence of the effectiveness of the control environment itself.

Independent audit results are conducted by parties external to the control's operation, providing an objective and unbiased assessment of the control environment's design and operational effectiveness. This external validation offers the highest level of assurance regarding the robustness and reliability of internal controls.