Which validation method allows an auditor to observe and verify specific conditions at a work site?

The method that permits an auditor to observe and verify specific conditions at a work site is observation. This approach involves directly witnessing processes, activities, or physical conditions as they occur in real-time. By utilizing observation, an auditor can gather first-hand evidence of compliance with policies, procedures, and regulatory requirements, enhancing the accuracy and reliability of the audit findings.

This technique is particularly valuable because it allows the auditor to assess not only the adherence to procedures but also the practical application of those procedures within the operational environment. It provides insights that documentation alone may not reveal, thereby helping to form a comprehensive understanding of the work site conditions and practices.

In contrast, inspection typically refers to examining documents, records, or other outputs rather than the live processes or conditions themselves. While reviews focus on analyzing and evaluating materials already in existence, assessments often involve broader evaluations or judgments rather than direct verification of specific conditions in real-time. Thus, observation is uniquely suited for this purpose within the context of an audit.