ISO/IEC 27001:2022, clause 10.2 (Nonconformity and corrective action):

When a nonconformity occurs, the organization shall … take action to control and correct it, and deal with the consequences; evaluate the need for action to eliminate the cause(s) of the nonconformity, in order that it does not recur or occur elsewhere; implement any action needed; review the effectiveness of any corrective action taken.

The auditor’s responsibility is to verify effectiveness of corrective actions. This means the auditor must look for evidence of change that actually addresses the root cause and prevents recurrence — not just temporary fixes, promises, or documentation.

Let’s analyse the distractors:

A. Incorrect — corrective action should not allow recurrence.

B. Incorrect — refers to preventive action, which ISO 27001:2022 no longer uses as a separate concept; instead, it is integrated into risk management.

C. Weak — merely “reducing probability” is not sufficient; ISO 27001 requires elimination of causes to prevent recurrence.

D. Incorrect — “assurance from the auditee” is not acceptable evidence; auditors need objective evidence, not verbal commitment.

E. Incorrect — “comfort” is not an audit principle; ISO 19011 requires objective evidence.

F. Correct — aligns directly with ISO 27001 clause 10.2: “review the effectiveness of any corrective action taken … so that nonconformity does not recur.”

Thus, the correct nonconformity statement is:

“When reviewing the effectiveness of action taken in response to a nonconformity, an auditor seeks evidence of change that will prevent recurrence of the issue.”