Comprehensive and Detailed In-Depth Explanation:
A combined audit is when multiple management systems (e.g., ISO 9001 for Quality, ISO 14001 for Environmental Management, and ISO 45001 for Occupational Health & Safety) are audited together in a single organization.
Clause References:
* ISO 19011:2018, Clause 5.4 - Combined Audits:
* A combined audit is performed when two or more management systems are assessed simultaneously at the same auditee.
Why is the Correct Answer A?
* A combined audit reduces duplication of effort by auditing multiple standards together at a single organization.
* Example: A company certified to both ISO 9001 and ISO 14001 can have one audit covering both standards.
Why are the Other Options Incorrect?
* B (Two or more auditing organizations cooperating on a single auditee) # This is a joint audit, not a combined audit.
* C (Two or more management systems audited at multiple auditees) # This is a multiple-site audit, not a combined audit.