Explanation:
First-party Management System audit # All members of an audited organisation Second-party Management System audit # Interested parties of an organisation According to ISO 19011:2018 (Guidelines for Auditing Management Systems) and as reinforced in ISO
9001 Lead Auditor training materials, audit types are defined as:
* First-party audit - conducted by the organization itself, or on its behalf (internal audit).# The audit client is all members of the audited organisation, because the audit is internal, involving all functional areas under the organization's control.
* Second-party audit - conducted by a customer or other person on behalf of a customer (external but not by a certification body).# The audit client includes interested parties of an organisation, such as customers who want to verify if their suppliers meet contractual or regulatory requirements.
These definitions are directly aligned with ISO 19011:2018, Clause 3.13 - Types of audits.
Why Other Options Are Incorrect:
* Certification body / Accreditation body # These relate to third-party audits, not first or second.
* Top management / Functions of an audited organisation # Refer to auditees or audit participants, not the audit client itself.
References:
ISO 19011:2018 Clause 3.13 - Types of audits
ISO 9001:2015 Clause 9.2 - Internal audit
ISO Definitions for First-party, Second-party, and Third-party audits

Based on the scenario and the concept of an 'audit trail' within the context of ISO 9001, the three statements that apply would likely be:
A). Decisions on improvement action timescales not involving departmental managers. This indicates a lack of involvement and communication with those responsible for implementing the improvements, which is a key part of an effective audit trail1.
B). Evaluation of the results of the improvement action not always documented by the Quality Manager.
Proper documentation is essential for an audit trail, as it provides evidence that actions have been evaluated and are effective1.
C). Limited knowledge of the content of Quality Improvement Requests by departmental staff. An audit trail should ensure that all relevant parties are aware of and understand the actions being taken, which is not the case here1.
These points suggest issues with the communication, documentation, and involvement of relevant personnel in the quality management system processes, which are crucial for maintaining an effective audit trail and, by extension, a robust quality management system.

According to the ISO 9001:2015 standard, clause 8.7 requires that an organization identify and control any nonconforming outputs that do not conform to the requirements of the customer or other relevant requirements. Nonconforming outputs are any outputs from the process, product or service that do not meet the specified quality criteria. Nonconforming outputs must be dealt with in one or more of the following ways:
Correction of the nonconformity
Segregation, containment, return or suspension of provision of products and services Informing the customer Authorisation for acceptance under concession The organization must also retain documented information on the description of the nonconformity, the actions taken, any concessions obtained, and the identification of the authority deciding the action to resolve the nonconformity.
In this scenario, you have interviewed a line supervisor who is responsible for managing a manual picking line where operators are removing contaminant materials from incoming products. The supervisor has explained that these plastic items are rejected at this stage because they do not meet their processing standards and they can damage their machinery and compromise their quality standards. The supervisor has also mentioned that some of these rejected items are melted down in another process later on and some are disposed of as waste products that cannot be recycled.
Based on this information, you can investigate further by taking two actions:
A: Check the process for handling nonconforming items: You can verify whether there is a documented procedure for identifying, segregating, containing, returning or suspending provision of nonconforming items at this stage. You can also check whether there is a system for informing customers about any nonconforming items that may affect their satisfaction or expectations.
D: Determine what happens to the waste products: You can verify whether there is a documented procedure for disposing of waste products that cannot be recycled as per environmental regulations and customer requirements.
These two actions would help you to determine whether there are any nonconforming outputs at this stage and how they are controlled by the organization.

The appropriate response in this situation would be:
C: I will raise it as a minor nonconformity; you have the option to appeal to our Certification Body.
This response acknowledges the restaurant manager's point that the shortage of some hamburgers may not constitute a management system failure. However, the fact remains that the menu was not updated to reflect the current availability of products, which led to customer dissatisfaction. This is a deviation from the ISO
9001 standard, which requires that the organization ensures the availability of resources needed to provide products and services as promised1. Raising it as a minor nonconformity allows the organization to address the issue within a specified timeframe and provides an opportunity for appeal if the organization disagrees with the auditor's decision2.

Comprehensive and Detailed In-Depth Explanation:
Completeness ensures that all necessary audit evidence, observations, and findings are properly documented, which is critical for traceability and accountability in an audit.
While transparency and fair presentation are principles of auditing, completeness is specifically related to maintaining audit work documents, as required in ISO 19011:2018, Clause 6.5.4 (Preparing Audit Work Documents).
Reference:
ISO 19011:2018, Clause 6.5.4 (Preparing Audit Work Documents)