To answer this question, you need to understand the reasons for splitting testing into distinct stages. Let's go through each option to understand why it is correct or incorrect:
Option A) Each test stage has a different purpose. - This option is correct because splitting testing into distinct stages allows us to focus on specific aspects or objectives of testing at each stage. Different stages can target different types of testing, such as unit testing, integration testing, system testing, and acceptance testing. Each stage serves a specific purpose and helps ensure that different aspects of the software are thoroughly tested.
Option B) It is easier to manage testing in stages. - This option is incorrect. While it is true that dividing testing into stages can help with managing the testing process, this is not the primary reason for splitting testing into stages. The primary reason is to address different testing objectives at each stage.
Option C) We can run different tests in different environments. - This option is not directly related to the primary reason for splitting testing into stages. Running different tests in different environments can be a factor in testing, but it is not the main reason for dividing testing into stages.
Option D) The more stages we have, the better the testing. - This option is incorrect. The number of stages does not necessarily determine the quality of testing. The effectiveness of testing depends on how well each stage is designed and executed, not solely on the number of stages.
The correct answer is A) Each test stage has a different purpose. This option is correct because splitting testing into distinct stages allows us to focus on specific aspects or objectives of testing at each stage. Each stage serves a specific purpose and helps ensure that different aspects of the software are thoroughly tested.