Question 1Black box testing techniques are mostly used in what type of testing?1 pointunitconditionloopintegrationdata flow

Black box testing techniques are mostly used in integration testing.

Here's a step-by-step explanation:

1. Black box testing is a method of software testing that examines the functionality of an application without peering into its internal structures or workings. This method of test can be applied to virtually every level of software testing: unit, integration, system and acceptance.

2. However, it is mostly used in integration testing. The reason is that black box testing allows the tester to focus on the input and output without considering how the software works internally.

3. In integration testing, different modules are combined and tested as a group. The focus is on the data communication amongst these modules. Hence, it is more about checking the functionality rather than the internal details of program structure.

4. Therefore, black box testing techniques, which are focused on the functionality, are highly suitable and mostly used in integration testing.