Which type of documentation records details of information or events in an organized record-keeping system, usually sequenced in the order in which they occurred?

The correct choice is a log, as it specifically refers to a systematic documentation method that captures events or information sequentially based on the time of occurrence. Logs are essential in various fields, including cybersecurity, where they track activities such as user actions, system changes, or security incidents. By recording these details in chronological order, logs provide a reliable and accessible history that can aid in monitoring, analysis, and incident response.

While other options serve distinct purposes, they do not fit the definition of maintaining an organized record-keeping system primarily based on the sequence of events. An audit trail, for instance, generally refers to a comprehensive record that traces the detailed steps of transactions or changes in systems but is not limited to mere chronological order as a log is. Similarly, a ledger usually pertains to financial records rather than a broad range of documented events, serving a different purpose in accounting. Reports summarize information and findings but do not inherently organize events in the sequence they occurred.