After signing a contract with a vendor, the vendor repeatedly requests changes to the procurement Statement of Work (SOW) that would improve the project's outcome. What should the project manager do next?

The project manager should assess the situation as an opportunity for improvement and perform a risk analysis because the vendor is proposing changes that would improve the project's outcome. This indicates a potential benefit that warrants further investigation, including a thorough risk analysis to understand any associated downsides (e.g., cost, schedule, quality impacts). Ignoring these suggestions or immediately dismissing them could lead to a missed opportunity for project enhancement. Switching vendors is a drastic measure and premature, as the current vendor is proposing improvements, not failing to deliver. Revising the control process is not the immediate next step, as the issue is not necessarily a flaw in the process but a proposed change. Conducting an audit is also premature; the immediate action should be to evaluate the proposed improvements.