A business analyst told the customer in an elevator that constant requirement changes mean the product will take longer than expected. What should the project manager do?

The correct answer emphasizes proper communication channels and authority. The project manager is ultimately responsible for project timelines and official communication regarding scope and schedule changes. An informal comment in an elevator by a business analyst can cause confusion and undermine project control. The project manager needs to re-establish clear communication protocols. Submitting a change request is premature; the project manager first needs to understand the situation and re-assert control over communication. Checking the resource management plan doesn't address the underlying communication breakdown. While explaining the importance of traceable communication methods is good, the immediate concern is correcting the perception created by the business analyst and reinforcing the project manager's role as the primary communicator for critical project information.