Before a daily standup a team member told the project manager they have accepted another job and plan to present their resignation to the functional manager. What should the project manager do next?

The project manager's priority is to minimize disruption and ensure project continuity. Speaking with the functional manager is the most appropriate next step because they are responsible for personnel matters and can collaborate on a mitigation strategy, such as reassigning tasks, finding a replacement, or adjusting timelines. This proactive approach helps manage the impact of the team member's departure. Contacting the product owner and reviewing the sprint backlog is premature; the immediate concern is the personnel change. Informing the team at the daily standup without a plan can cause unnecessary alarm or demotivation. Alerting the functional manager about potential delivery delays is a consequence, not the initial action; the focus should be on developing a solution first.