Which of the following is a black -box testing technique? a. Unit testing b. White-box testing c. Boundary value analysis d. Static testing e. Code review

The correct answer is **c. Boundary value analysis**.Boundary value analysis is a black-box testing technique. Black-box testing focuses on the functionality of the software without considering the internal structure or code. Boundary value analysis specifically tests the boundaries of input values to identify potential errors.The other options are incorrect because:* **a. Unit testing:** This is a white-box testing technique, focusing on individual units of code.* **b. White-box testing:** This tests the internal structure and code of the software.* **d. Static testing:** This involves reviewing documents and code without executing the software, so it's not a runtime testing technique like boundary value analysis.* **e. Code review:** Similar to static testing, this is a manual examination of the code and doesn't involve executing the software.