Final answer:
Confirmation testing is best suited for verifying that reported issues have been fixed in new builds, followed by regression testing to check that new changes do not negatively impact existing features.
Step-by-step explanation:
To address the issue of daily builds where fixes are either not included or not working, Confirmation testing, also known as re-testing, is the most appropriate type of testing. Confirmation testing is focused on verifying that specific issues that were previously reported have been fixed in a new build. Following confirmation testing, Regression testing could be employed to ensure that new changes have not adversely affected existing functionality.