When stakeholders report poor coordination and limited progress visibility across dependent work streams, the project manager should address the system that governs information flow, coordination mechanisms, and reporting-not just hold a one-off meeting. Reviewing and updating the communications management plan (C) is the best action because it defines how progress is captured, how dependencies are managed and communicated, what forums exist (scrums-of-scrums, integration checkpoints, cross-stream planning), what reporting artifacts are used (dashboards, dependency boards, milestone charts), and the frequency/ownership of updates. A team status meeting (B) can be a short-term tactic, but it doesn't fix the structural gap that created the visibility problem. Escalating to sponsor or steering committee (A, D) is unnecessary as a first response; escalation is appropriate only if the PM cannot implement the needed communications/coordination improvements or if decisions exceed authority. Updating the plan restores alignment on expectations, improves transparency, and provides repeatable governance for multi-stream coordination-directly supporting stakeholder engagement and predictable delivery.