Continuous integration is the practice of regularly merging code into a central repository, typically supported by automated builds and tests, so option B is correct. Its purpose is to detect integration issues early, improve quality, and support a smoother flow of changes through the build and transition activities. By integrating frequently, teams reduce the risk and complexity that arise when many changes are combined late. Automated testing and validation are essential because they provide fast feedback and confidence that the new code still works as expected.