According to the ISO 9000:2015 quality management principles document1, risk-based approach is not one of the seven quality management principles that ISO 9000, ISO 9001 and other related quality management standards are based on. The seven quality management principles are:
* Customer focus
* Leadership
* Engagement of people
* Process approach
* Improvement
* Evidence-based decision making
* Relationship management
Therefore, risk-based approach is not a quality management principle under ISO 9001:2015.
References: ISO - Quality management principles

Explanation:
Establishing the audit programme objectives
Determining and evaluating the audit programme risks and opportunities
Establishing the audit programme
Initiating the audit
Preparing all audit activity
Conducting the audit activities
According to ISO 19011:2018, clause 5, the audit programme is a set of one or more audits planned for a specific time frame and directed towards a specific purpose. The audit programme includes all activities necessary to plan, organize, and conduct the audits. The audit programme management involves the following steps1:
Establishing the audit programme objectives: The audit programme objectives define the intended outcomes of the audit programme, such as verifying conformity, evaluating performance, identifying improvement opportunities, etc. The audit programme objectives should be aligned with the strategic direction and policies of the organization and the needs and expectations of the interested parties.
Determining and evaluating the audit programme risks and opportunities: The audit programme risks and opportunities are the factors that can affect the achievement of the audit programme objectives, such as changes in the internal or external context, availability of resources, competence of auditors, etc. The audit programme risks and opportunities should be identified, analyzed, and evaluated to determine the appropriate actions to address them.
Establishing the audit programme: The audit programme is established by defining the audit programme scope, criteria, methods, and resources. The audit programme scope defines the extent and boundaries of the audit programme, such as the processes, functions, sites, activities, etc. that will be audited. The audit programme criteria are the set of policies, procedures, or requirements used as a reference for the audits. The audit programme methods are the techniques used to conduct the audits, such as interviews, observations, document review, sampling, etc. The audit programme resources are the human, technical, and financial resources needed to implement the audit programme.
Initiating the audit: The audit initiation is the process of formally establishing the arrangements for an individual audit within the audit programme. The audit initiation involves contacting the auditee and the audit client, confirming the audit objectives, scope, and criteria, and obtaining the necessary information and access for the audit.
Preparing all audit activity: The audit preparation is the process of developing the audit plan and the audit work documents for an individual audit. The audit plan is a document that provides the basis for agreement regarding the conduct of the audit, such as the audit schedule, the audit team, the audit methods, the audit language, the audit report, etc. The audit work documents are the records that provide evidence of the audit activities, such as the audit checklist, the audit notes, the audit findings, etc.
Conducting the audit activities: The audit activities are the processes of collecting and verifying audit evidence and evaluating it against the audit criteria to make the audit conclusions. The audit activities include the opening meeting, the communication during the audit, the roles and responsibilities of the audit team and the auditee, the audit evidence collection and verification, the audit findings generation and recording, the closing meeting, and the audit report preparation and distribution.
References: ISO 19011:2018(en), Guidelines for auditing management systems

The action that the auditor would have accepted is:
*Option B: Apply the existing process of addressing the risks and opportunities of milk production. This option is correct because ISO 9001:2015 clause 8.1 requires the organization to plan, implement and control the processes needed to meet the requirements for the provision of products and services, and to implement actions determined in clause 6.1, which refers to the actions to address risks and opportunities. The organization should apply the existing process of addressing the risks and opportunities of milk production, which may include identifying the sources of variability, assessing the potential impacts and consequences, determining and implementing appropriate actions to reduce or eliminate the variability, monitoring and measuring the effectiveness of the actions, and reviewing and updating the actions as necessary.
The following options are not correct:
*Option A: Modify the contract with the current customer to provide them with only 1,500 litres of milk per day and make an agreement with a second customer. This option is not correct because it does not address the root cause of the variability in the daily production of the milking yard, which may affect the quality and consistency of the products and services provided by the organization. It also does not demonstrate the organization's commitment to meet the customer and applicable statutory and regulatory requirements, as required by ISO 9001:2015 clause 8.2.2.
*Option C: Retain the current contract and try to sell the occasional surplus milk to a second customer. This option is not correct because it does not address the root cause of the variability in the daily production of the milking yard, which may affect the quality and consistency of the products and services provided by the organization. It also does not demonstrate the organization's commitment to meet the customer and applicable statutory and regulatory requirements, as required by ISO 9001:2015 clause 8.2.2.
*Option D: Analyse the daily dispatch of milk for 7 days to determine its variability. This option is not correct because it does not address the root cause of the variability in the daily production of the milking yard, which may affect the quality and consistency of the products and services provided by the organization. It also does not demonstrate the organization's commitment to implement actions to address risks and opportunities, as required by ISO 9001:2015 clause 8.1.
References:
*ISO 9001:2015 Quality management systems - Requirements, Clause 8: Operation, Subclause 8.1:
Operational planning and control, Subclause 8.2: Requirements for products and services
*ISO 9001 Lead Auditor Course Material, Module 4: ISO 9001:2015 Requirements, Slide 23: Clause 8 - Operation
*ISO 9001 Lead Auditor Training Course - IRCA Certified, Section 4.2: ISO 9001:2015 Requirements, Subsection 4.2.8: Clause 8 - Operation
*Lead Auditor Exam Preparation Guide (EPG) Template - PECB, Section 3.2: Exam Content Outline, Subsection 3.2.1: Section 1 - Audit Fundamentals, Subsection 3.2.2: Section 2 - Audit Principles, Subsection
3.2.3: Section 3 - Audit Process, Subsection 3.2.4: Section 4 - Audit Competencies

In this scenario, the time allocated by the audit team leader for the Human Resources audit is fixed, and as an auditor, you must work within that constraint. Although the sampling criteria suggests reviewing 25 personnel files, it is acceptable to adjust the sample size based on time and resource limitations. ISO 9001:2015 emphasizes risk-based thinking and practical resource management (Clause 7.1), so it is reasonable to review a smaller sample if the time is insufficient.
Option B is a pragmatic approach, allowing you to focus on quality over quantity by reviewing as many cases as time allows without compromising the audit schedule.
Options like extending the audit (A, C, D) are impractical in a structured audit environment, especially for second-party audits where maintaining the agreed schedule is important.

Comprehensive and Detailed In-Depth Explanation:
Auditors must report findings truthfully and accurately to ensure an unbiased assessment of the QMS.
Clause References:
ISO 19011:2018, Clause 4 - Principles of Auditing:
Fair Presentation # Requires auditors to report truthfully and accurately, without bias or omission.
Integrity # Ensures auditors adhere to ethical conduct.
Why is the Correct Answer A?
The audit team reported findings truthfully, based on collected evidence.
Fair presentation ensures that both positive and negative findings are included in the audit report.
Objective evidence was gathered through interviews, document reviews, and observations.
Why are the Other Options Incorrect?
B (Integrity) # Related to ethics and professional conduct, but not specifically about presenting findings.
C (Confidentiality) # Important, but does not apply to the principle of reporting findings accurately.
D (Objectivity) # Ensures impartiality, but "fair presentation" directly addresses accurate reporting of findings.
Reference:
ISO 19011:2018, Clause 4 - Principles of Auditing (Fair Presentation)