The correct responsibility with each participant of a second-party audit is:

Prepares the audit report: Audit Team Leader. The audit team leader is responsible for coordinating the audit activities, communicating with the auditee and the customer, and preparing and delivering the audit report that summarizes the audit findings and conclusions1.

Prepares audit checklists for use during the audit: Auditor. The auditor is responsible for collecting and verifying objective evidence during the audit, using audit checklists as a tool to guide the audit process and ensure that all relevant aspects of the audit criteria are covered1.

Supports an auditor and provides feedback on their experience: Auditor in training. The auditor in training is a person who is learning how to perform audits under the supervision of an experienced auditor. The auditor in training supports the auditor by observing and participating in the audit activities, and provides feedback on their experience to improve their skills and competence1.

Follows-up on audit findings within an agreed timeframe: Auditee. The auditee is the organisation that is being audited by the customer or a third party on behalf of the customer. The auditee is responsible for providing access and cooperation to the auditors, and for following up on the audit findings within an agreed timeframe, by implementing corrective actions or improvement measures as needed1.

Provides an independent account of the audit but does not participate in the audit: Observer. The observer is a person who accompanies the audit team but does not participate in the audit activities. The observer may be a representative of the customer, a regulatory body, or another interested party. The observer provides an independent account of the audit but does not interfere with or influence the audit process or outcome1.

Escorts the auditors but does not participate in the audit: Guide. The guide is a person who is appointed by the auditee to assist the audit team during the audit. The guide may escort the auditors to different locations, facilitate access to information and personnel, or provide clarification or explanation as requested by the auditors. The guide does not participate in the audit or influence its results1.