Question:What is the purpose of using a combination of audit test plans?

Comprehensive and Detailed In-Depth Explanation:

A. Correct Answer:

Combining multiple audit test plans ensures different perspectives and validation techniques are applied, improving audit accuracy.

ISO 19011:2018 encourages a diversified approach to auditing to ensure comprehensive results.

B. Incorrect:

Not all areas require equal auditing—risk-based focus is preferred.

C. Incorrect:

Frequent audits may still be required depending on organizational needs.

Relevant Standard Reference:

ISO 19011:2018 Clause 6.4.3 (Using Multiple Audit Test Methods for Assurance)