To answer this question, you need to understand different testing phases and their purposes. Let's go through each option to understand why it is correct or incorrect:
Option A) Ad Hoc Testing - This option is correct. Ad hoc testing is a testing phase where the tester tries to 'break' the system by randomly trying the system's functionality. It is an informal and unstructured testing approach where the tester does not follow any specific test cases or plans.
Option B) Ramp Testing - This option is incorrect. Ramp testing, also known as load testing, is a type of performance testing where the system is tested under increasing load or stress to evaluate its behavior and performance.
Option C) Unit Testing - This option is incorrect. Unit testing is a testing phase where individual units or components of a software system are tested to ensure they function correctly. It focuses on testing small, isolated parts of the system rather than the system as a whole.
Option D) White Box Testing - This option is incorrect. White box testing is a testing technique where the tester has access to the internal structure and code of the system. It involves testing the internal logic, paths, and branches of the code to ensure its completeness and correctness.
The correct answer is A) Ad Hoc Testing. This option is correct because ad hoc testing involves randomly trying the system's functionality to 'break' it, without following any specific test cases or plans.