What must be done to the corrected code before it is finalized?

Regression testing is crucial before finalizing any corrected code because it ensures that the changes made do not inadvertently impact existing functionalities. This type of testing re-evaluates the system after updates to confirm that previously developed and tested software still performs after a change. By performing regression testing, any unforeseen bugs introduced by recent corrections can be identified and fixed, thus maintaining the integrity of the entire system.

The other options, while important aspects of the software development lifecycle, do not specifically address the immediate need to verify that corrections do not interfere with established code. Documentation helps provide clarity and guidance for future developers, peer reviews can enhance code quality by bringing in different perspectives, and archiving serves as a historical record, but regression testing directly targets the reliability and stability of the code following modifications.