Comprehensive and Detailed In-Depth Explanation:

Auditors must have competence in risk-based auditing to effectively assess an organization’s QMS performance and compliance.

Clause References:

ISO 19011:2018, Clause 7.2.3 – Determining Auditor Competence:

Auditors must have knowledge of risk-based thinking to assess risk impact on processes.

ISO 9001:2015, Clause 0.3.3 – Risk-Based Thinking:

The standard emphasizes proactive risk management, which auditors must understand.

Why is the Correct Answer B?

Risk-based auditing ensures audits focus on high-risk areas, improving audit effectiveness.

Auditors must assess how organizations apply risk-based thinking in decision-making, process control, and improvement.

Why are the Other Options Incorrect?

A (Industry knowledge) → While helpful, it is not mandatory for all auditors.

C (Expertise in all domains) → Auditors are not required to be experts in all areas, just in audit methodology.

D (Formal degree in quality management) → ISO does not require a formal degree, just competence in audit principles and methods.