A project is delayed because significant rework from a quality problem is affecting the critical path. What should the project manager do?

The correct answer is to report the delay with rectifying actions to the change control board (CCB) for review. A significant delay affecting the critical path due to rework from a quality problem constitutes a change to the project's baselines (scope, schedule, and/or cost). Any changes to baselines require formal review and approval by the CCB. The project manager must present the problem, its impact, and proposed rectifying actions to the CCB for their decision. Reporting the delay to the PMO is a good practice but doesn't address the formal change control process required for baseline deviations. Rebaselining the project schedule unilaterally is incorrect; rebaselining requires CCB approval. Informing the project steering committee is also good communication, but it bypasses the formal change control mechanism.