In an agile project currently in iteration four of six, a team member leaves the company with no replacement. What should the project manager do?

The project manager should update the issue log and consult the resource management plan because this is the most systematic and comprehensive approach to addressing a critical resource departure. The issue log formally documents the problem, ensuring it's tracked and visible. The resource management plan outlines strategies for acquiring, managing, and releasing project resources, including contingency plans for resource loss. This plan will guide the project manager in identifying potential solutions, such as cross-training, reassigning tasks, or requesting new resources, while considering the project's overall resource strategy. Asking the sponsor for an experienced internal team member is a potential solution, but it's premature without first consulting the established resource plan. Reducing project scope is a drastic measure that should only be considered after exploring other resource solutions and assessing the impact on project objectives. Asking remaining team members to take on extra work can lead to burnout and decreased quality, and it's not a sustainable long-term solution.