Comprehensive and Detailed In-Depth Explanation:
Before accepting an audit, the certification body must assess the integrity of the auditee and the nature of its operations to ensure compliance feasibility.
Clause References:
* ISO/IEC 17021-1:2015, Clause 9.1.2 - Audit Planning:
* The certification body must review the auditee's background, reputation, and operational complexity before accepting the audit.
Why is the Correct Answer C?
* The auditee's integrity and reputation impact the credibility of certification.
* The nature of operations determines audit complexity and resource allocation.
Why are the Other Options Incorrect?
* A (Integrity and reputation only) # Correct but incomplete; nature of operations is equally important.
* B (Nature of operations only) # Integrity is also a factor, not just operations.
* D (No previous major nonconformities required) # Auditees with past major nonconformities can still be audited if corrective actions are taken.