Under what conditions should an investigation be closed?

• A. When the investigation is completed regardless of evidence.
• B. When a tentative conclusion is reached.
• C. When additional information cannot be obtained and resources exhausted.
• D. When evidence supports findings, corrective actions implemented, verification completed, and no new information indicates ongoing risk.

Answer: (D)

The main idea is to close an investigation only when you have solid, evidence-based assurance that the issue is fully addressed and no new information suggests ongoing risk. This is best captured by a condition where the findings are supported by evidence, corrective actions have been implemented, verification confirms those actions were effective, and there’s no information indicating remaining risk. That combination shows the problem is understood, the root causes and corrective steps are in place, and monitoring confirms the risk is mitigated.

Closing after completion regardless of evidence could leave unresolved findings or lingering risk. Stopping on a tentative conclusion is premature because the meaning of the investigation’s results isn’t final until evidence supports them. Ending because no more information can be obtained or resources are exhausted can overlook ongoing risk or unverified actions. The strongest, safest closure requires demonstrated evidence, implemented and verified remedies, and no signs of continuing risk.