Which of the following are considered 'Exit Criteria'?

The correct answer identifies the components that are commonly recognized as measures to determine when testing can be concluded. Exit criteria are specific conditions that must be met in order for the testing phase to be deemed complete. They ensure that all necessary aspects of the testing process align with project goals and that the product meets quality standards before release.

Coverage of code indicates the extent to which the code has been tested, ensuring that all significant paths and functionalities are validated. Schedule addresses the timeframe in which testing should be completed, which can impact project timelines and deliverables. Estimates of defect density provide insights into the number of defects found relative to the size of the software, influencing decisions on whether further testing is needed based on quality assessments.

These elements collectively ensure that the software not only meets pre-established quality benchmarks but also aligns with the project's overall goals in terms of performance and reliability prior to deployment.