What is the primary purpose of confirmation testing?

Confirmation testing, also known as re-testing, is specifically intended to verify that a previously identified defect has been successfully fixed and that the fix works as intended. It involves running the same test cases that initially uncovered the defect, with the goal of confirming that the issue no longer exists in the software. This process ensures that the development team's fixes effectively address the problems without introducing new defects.

The other options pertain to different aspects of software testing. While ensuring that software is ready for release is a broader aim of system testing or acceptance testing, analyzing code quality involves examining the actual source code for maintainability, performance, and adherence to coding standards, which falls under static analysis or code review processes. Evaluating user experience focuses on how users interact with the software and their satisfaction levels, which relates more to usability testing rather than confirmation testing. Thus, the primary goal of confirmation testing is accurately portrayed by its alignment with verifying that a fix works as intended.