A multinational project team of varied professionals is failing to meet its deliverables. What should the project manager do?

The project manager should first provide support to the team to solve their own problems. This aligns with the project manager's role as a facilitator and leader, empowering the team to take ownership and develop solutions. This approach fosters team autonomy and problem-solving skills, which are crucial for long-term project success and team development. Informing the project sponsor and training the entire team might be a later step if initial support efforts fail, but it's not the immediate first action. Requesting HR for performance training or asking functional managers to replace team members are drastic measures that undermine team morale and trust and should only be considered as a last resort after attempting to resolve issues internally.