Scenario: A project manager is overseeing the testing phase of a software development project. They need to ensure that test activities are progressing as planned and that any issues are promptly addressed. What key metrics should the project manager track to monitor the testing process effectively?

Monitoring test execution progress is crucial for a project manager to ensure that testing activities align with the project timeline. Other key metrics such as defect density, test coverage, and test case pass rate provide insights into the quality and completeness of testing. These metrics collectively help the project manager assess the overall effectiveness of the testing process and address any issues promptly to ensure a successful software development project.