What is the main purpose of use case testing?

The main purpose of use case testing is to identify defects in process flows related to the typical use of the system. This testing technique focuses on validating the interactions and behaviors of the application as it would be used by the end-users. By examining various use cases, testers can assess whether the system behaves as expected when subjected to typical user scenarios and workflows.

Use case testing ensures that all functional requirements expressed as use cases are met and allows testers to identify any issues that could affect user satisfaction or system performance during regular operations. This method is particularly effective for ensuring that the software meets user needs and that its functionality aligns with the intended user paths.

The other options focus on different aspects of testing that do not directly pertain to the primary goal of use case testing: verifying the normal operational flow of a system from the user's perspective.