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Quality gates in a deployment pipeline are
AManual signoffs collected over many days
BDocumentation reviews after the release
CDatabase backups taken before each test
DAutomated checks blocking promotion if failed
Answer & Solution
Correct answer: D. Automated checks blocking promotion if failed
Quality gates enforce thresholds (unit-test pass, code coverage, security findings, performance regression) at pipeline stages. Failure blocks promotion to the next environment. Tools: SonarQube quality gate, custom CI checks.
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