The correct answer is B.
OBJ-2.2: Load testing or stress testing puts an application, network, or system under full load conditions to document any performance lapses. User Acceptance Testing is the process of verifying that a created solution/software works for a user. Regression testing is defined as software testing to confirm that a recent program or code change has not adversely affected existing features. Fuzz testing, or fuzzing, is a quality assurance technique used to discover coding errors and security loopholes in software, operating systems, or networks. It involves inputting massive amounts of random data to the test subject to make it crash. User acceptance testing, regression testing, and fuzz testing are not designed to test a system under heavy load conditions. Therefore, they will not be suitable for Annah’s needs in this scenario.