Confidentiality is one of the principles of audit conduct that auditors should adhere to when performing audits. Confidentiality means that auditors should exercise discretion in the use and protection of information acquired in the course of their duties3. Auditors should respect the intellectual property rights of the auditee and other parties involved in the audit, and should not disclose any information that is sensitive, proprietary, or confidential without prior approval from the auditee or other authorized parties3. Auditors should also obtain the auditee's permission before using a camera or recording equipment during an audit, as these devices may capture confidential information or infringe on the privacy of individuals3. Therefore, these two options correctly state the function of confidentiality in an audit. The other options are either incorrect or irrelevant to confidentiality. For example, auditors are not forced by regulatory requirements to maintain confidentiality in an audit, but rather by ethical obligations and contractual agreements3. Observers in an audit team can access confidential information if they have signed a confidentiality agreement and have been authorized by the auditee3. Audit information can be used for improving personal competence by the auditor only if it does not compromise confidentiality or conflict with other interests3. As an auditor is always accompanied by a guide, there is still a risk to the auditee's sensitive information if the guide is not trustworthy or authorized to access such information3. References: ISO 19011:2018 - Guidelines for auditing management systems

The options B, D, and G are not valid audit trails because they are not directly related to the ISMS requirements or the audit criteria. They are more relevant to the human resource management or the contractual arrangements of the organization, which are outside the scope of the ISMS audit. The other options are valid audit trails because they can provide evidence of how the organization implements and maintains the ISMS controls related to access control, secure areas, and information security aspects of business continuity management. References:
* PECB Candidate Handbook ISO/IEC 27001 Lead Auditor, page 16, section 4.2.1
* ISO/IEC 27001:2013, clauses A.5.3, A.5.15, A.5.35, A.6.1, A.6.2, A.6.5, A.8.4, A.17.1
* ISO 19011:2018, clause 6.2.2

Explanation
You should lock your computer by pressing Windows+L or CTRL-ALT-DELETE and then click "Lock Computer", because this is the most effective way to protect sensitive data in your computer when you go out for lunch. By locking your computer, you are preventing unauthorized access to your computer and its contents, as well as complying with the organization's access control policy and information security policy.
Locking your computer requires a password or a biometric authentication to unlock it, which adds a layer of security to your data. The other options are not sufficient or reliable, as they do not prevent someone from accessing your computer or viewing your screen. References: [CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor Training Course], ISO/IEC 27001:2022 Information technology - Security techniques - Information security management systems - Requirements, How to lock your PC

Explanation
According to ISO 27001:2013, clause 5.2, the top management of an organization must establish, implement and maintain an information security policy that is appropriate to the purpose of the organization and provides a framework for setting information security objectives. The information security policy must also include a commitment to comply with the applicable legal, regulatory and contractual requirements, as well as any other requirements that the organization subscribes to. Therefore, maintaining regulatory compliance is part of fulfilling the management system policy and ensuring its effectiveness and suitability. References:
ISO/IEC 27001:2013, Information technology - Security techniques - Information security management systems - Requirements, clause 5.2 PECB Candidate Handbook ISO 27001 Lead Auditor, page 10 ISO 27001 Policy: How to write it according to ISO 27001

Explanation

* Risk analysis is the process by which the nature of the risk is determined along with its probability and impact. Risk analysis involves estimating the likelihood and consequences of potential events or situations that could affect the organization's information security objectives or requirements12. Risk analysis could use qualitative or quantitative methods, or a combination of both12.
* Risk management is the process by which a risk is controlled at all stages of its life cycle by means of the application of organisational policies, procedures and practices. Risk management involves establishing the context, identifying, analyzing, evaluating, treating, monitoring, and reviewing the risks that could affect the organization's information security performance or compliance12. Risk management aims to ensure that risks are identified and treated in a timely and effective manner, and that opportunities for improvement are exploited12.
* Risk identification is the process by which a risk is recognised and described. Risk identification involves identifying and documenting the sources, causes, events, scenarios, and potential impacts of risks that could affect the organization's information security objectives or requirements12. Risk identification could use various techniques, such as brainstorming, interviews, checklists, surveys, or historical data12.
* Risk evaluation is the process by which the impact and/or probability of a risk is compared against risk criteria to determine if it is tolerable. Risk evaluation involves comparing the results of risk analysis with predefined criteria that reflect the organization's risk appetite, tolerance, or acceptance12. Risk evaluation could use various methods, such as ranking, scoring, or matrix12. Risk evaluation helps to prioritize and decide on the appropriate risk treatment options12.
* Risk mitigation is the process by which the impact and/or probability of a risk is reduced by means of the application of controls. Risk mitigation involves selecting and implementing measures that are designed to prevent, reduce, transfer, or accept risks that could affect the organization's information security objectives or requirements12. Risk mitigation could include various types of controls, such as technical, organizational, legal, or physical12. Risk mitigation should be based on a cost-benefit analysis and a residual risk assessment12.
* Risk transfer is the process by which a risk is passed to a third party, for example through obtaining appropriate insurance. Risk transfer involves sharing or shifting some or all of the responsibility or liability for a risk to another party that has more capacity or capability to manage it12. Risk transfer could include various methods, such as contracts, agreements, partnerships, outsourcing, or insurance12. Risk transfer should not be used as a substitute for effective risk management within the organization12.
References :=
* ISO/IEC 27001:2022 Information technology - Security techniques - Information security management systems - Requirements
* ISO/IEC 27005:2022 Information technology - Security techniques - Information security risk management