Correct Answer: Use Case: A use case is a description of the process which is performed by the end user for a particular task Use case contains a sequence of step which is performed by the end user to complete a specific task or a step by step process that describe how the application and end user interact with each other Use case is written by the user point of view Use case Testing: the use case testing uses this use case to evaluate the application So that, the tester can examines all the functionalities of the application Use case testing cover whole application, tester performs this testing in step by step process to complete one task