Answer: OPTION A
Explanation: The main benefit of automated testing is that it is useful for performing the same test repeatedly (option a). Automated testing allows for the execution of repetitive and time-consuming tests that would otherwise be difficult and costly to perform manually. This can save time and effort, increase test coverage, and improve the overall quality and reliability of the software being tested. Automated testing can also help to identify issues and defects earlier in the development process, reducing the cost and effort required to fix them.