A project manager discovers that a critical project issue has been escalated to senior management without their knowledge. The issue was escalated by a team member who felt their concerns weren't being addressed through normal channels. What should the project manager do FIRST?

Meet with the team member to understand their concerns and why they felt escalation was necessary

Address the issue with senior management to provide context and project perspective

Remind the team about proper escalation procedures and communication channels

Document the incident and discuss it with the team member's functional manager