Which of the following tools would be involved in the automation of regression test
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Data tester
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Boundary tester
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Capture/Playback
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Output comparator
Capture/Playback tools record user interactions with the software and automatically replay them to verify that existing functionality still works correctly after changes. This makes them particularly valuable for regression testing, where the same test cases need to be executed repeatedly across multiple software builds. Other options like Data tester, Boundary tester, and Output comparator serve different testing purposes and are not primarily designed for test automation.
Capture/Playback tools record a tester's interactions with an application once and then replay them automatically, which is exactly what's needed to re-run the same set of checks repeatedly for regression testing. Data testers, boundary testers, and output comparators support specific testing activities but don't drive the record-and-replay automation that regression suites rely on.