A team lead informs the project manager that the datacenter will not be accessible when the project needs to be completed. The team lead also indicates that the team member who is assigned to…

A list of realized risks (also called the risk register's realized or triggered risks section) documents issues that have materialized during project execution. The datacenter being inaccessible and the team member being on medical leave are both risk events that have already occurred, making them realized risks. Recording them here ensures the project manager can track impacts, initiate responses, and update forecasts accordingly.

A list of decomposed activities is part of the work breakdown structure and records tasks, not risk occurrences.

A sequenced list of project tasks is the project schedule, which orders activities rather than documenting risk events.

A document describing agreed-upon communication methods defines how the team shares information, not where risk occurrences are recorded.