What demonstrates that corrective actions have been effective and sustained?

• A. Follow-up verification showing root cause mitigated, actions functioning, metrics show improvement.
• B. One-time inspection.
• C. Administrative sign-off only.
• D. Waiting for the next audit.

Answer: (A)

The key idea is that true corrective action effectiveness shows up in evidence collected after implementation, not just at the moment of fix. Follow-up verification that the root cause is mitigated, that the actions are functioning as intended, and that the relevant metrics show real, lasting improvement demonstrates that the solution is durable and reducing risk over time. This confirms both that the problem was addressed and that controls remain effective.

A one-time inspection only provides a snapshot and doesn’t prove sustainability. Administrative sign-off focuses on paperwork rather than actual performance. Waiting for the next audit offers no ongoing confirmation of improvement between audits.