A project scheduled for four months is split into eight iterations. In the first retrospective, the team discovers only one member has experience with a key project requirement. What should the project manager do?

Planning internal knowledge-sharing sessions is the most effective and proactive solution. This approach leverages existing team expertise, promotes collaboration, and builds collective capability quickly and cost-effectively within the project's timeframe. It addresses the skill gap directly by disseminating critical knowledge from the experienced team member to others. Inviting the team member to share at the next retrospective is insufficient because retrospectives are for process improvement, not primary knowledge transfer. Waiting for the next retrospective delays addressing an immediate skill gap. Asking the sponsor to add team members is a reactive and potentially slow solution that introduces new team dynamics and costs, which might not be feasible for a four-month project already underway. Requesting formal training is also a slower, more expensive option that might not align with the project's tight schedule and could be overkill if the knowledge can be shared internally.