Which type of question is best used to gain detailed insights during an audit interview?

Open-ended questions are best used during an audit interview because they encourage the interviewee to provide more elaborate and thoughtful responses. This type of questioning allows auditors to delve deeper into the subject matter, fostering a conversation that can uncover additional insights and details about processes, practices, and experiences within the organization.

By asking open-ended questions, auditors can obtain subjective information that may not be revealed through more restrictive questioning formats. This approach offers the opportunity to explore the reasoning behind decisions, actions taken by employees, and the overall understanding of the quality management system in place.

In contrast, the other types of questions have limitations that restrict the depth of information gathered. Closed-ended questions can only yield specific, limited responses, while yes/no questions confine the answers to binary options. Multiple choice questions also limit the respondent's ability to express their thoughts fully. Consequently, relying on open-ended questions enhances the auditor's ability to assess compliance with ISO 9001 standards effectively and engage with the interviewee in a meaningful way.