A project manager is leading a hybrid project.

When a schedule risk is driven by the performance or constraints of a specific team member, the project manager should first address the issue directly with that individual (D). This supports effective leadership and team management: understand the cause (workload, skill gap, unclear expectations, blockers, personal constraints), clarify priorities and due dates, and agree on corrective actions (support, pairing, coaching, removing impediments, or reassigning work). Jumping to revise timelines with the customer or sponsor (A, C) is premature and may undermine trust if the delay can be recovered through immediate corrective action. Meeting with the entire team (B) can help if the issue is systemic, but the question points to one member as the primary constraint; handling it privately first is appropriate and respectful. In hybrid delivery, timely issue resolution is essential because predictive components often have fixed milestones while agile components rely on flow; addressing the root cause quickly helps protect commitments and maintain team accountability without unnecessary escalation.

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