A project manager is assigned a low-priority project with new team members who lack formal project experience. The team has requested deadline extensions for the first development increment twice. What should the project manager do to support the team?

The most effective action is to provide feedback using project performance evaluations. This directly addresses the team's inexperience and recurring delays by identifying specific areas for improvement and offering constructive guidance. Performance evaluations facilitate learning and growth, which is crucial for new teams. Including buffer time might temporarily mask the underlying issue without addressing the team's skill gaps. Escalating to the sponsor or creating a change request are reactive measures that don't proactively support the team's development or improve their performance. While these might become necessary later, the immediate priority is to empower the team through feedback and coaching.