While working on a project, an unforeseen event arises that impacts a project objective. Which of the following should be updated as a result?

The stakeholder register contains information about project stakeholders, not unforeseen events or problems that impact objectives.

An unforeseen event that has arisen and is impacting a project objective is, by definition, an issue that requires management and resolution. The issue log is a dedicated project document used to record all identified issues, track their status, and manage their resolution throughout the project lifecycle.

The risk register documents potential future events that might occur, whereas the question describes an event that has already happened and is currently impacting the project.

A change log records approved or pending change requests, which might be a consequence of an issue, but the issue itself is first recorded in the issue log.