The two standards that are used as ISMS third-party certification audit criteria are ISO/IEC 27001 and relevant legal, statutory, and regulatory requirements. ISO/IEC 27001 specifies the requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS)1. Relevant legal, statutory, and regulatory requirements are those that apply to the organization’s information security aspects and objectives2. The other options are either not standards (E) or not directly related to the ISMS certification audit criteria (A, B, C, F). References: 1: ISO/IEC 27001:2022, Information technology — Security techniques — Information security management systems — Requirements, Clause 1 \n2: ISO/IEC 27001:2022, Information technology — Security techniques — Information security management systems — Requirements, Clause 4.2