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. Reference:
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