A document review is a process of examining the documented information related to the management system before the on-site audit activities. The purpose of a document review is to: 12

Determine the conformity of the management system, as far as documented, with audit criteria, i.e., to check whether the documents are consistent, complete, and compliant with the requirements of ISO/IEC 27001 and any other applicable standards or regulations.

Gather information to support the on-site audit activities, i.e., to identify the scope, objectives, processes, controls, risks, and opportunities of the management system, and to plan the audit methods, techniques, and resources accordingly.

The other statements are not accurate, because:

A document review does not reveal or decide about the conformity or nonconformity of the management system as a whole, but only of the documented information. The conformity or nonconformity of the management system is determined by the on-site audit activities, which include interviews, observations, and tests12

A document review does not gather evidence or findings to support the audit report or process, but information to support the on-site audit activities. The evidence or findings are collected during the on-site audit activities, which are then documented and reported12

A document review does not detect any nonconformity of the management system, if documented, but determines the conformity of the documented information. The nonconformity of the management system is detected by the on-site audit activities, which evaluate the performance and effectiveness of the management system12

A document review does not identify information to support the audit plan, but gathers information to support the on-site audit activities. The audit plan is prepared before the document review, based on the audit scope, objectives, criteria, and program. The document review is part of the audit plan implementation12

References:

1: ISO/IEC 27001:2022 Lead Auditor (Information Security Management Systems) Course by CQI and IRCA Certified Training 1 2: ISO/IEC 27001 Lead Auditor Training Course by PECB 2