Which is NOT a reason for using version control repositories?

Using version control repositories serves several key purposes that enhance project management and software development processes. The statement that involves permanently storing all versions of every file does not accurately capture the primary intention of version control. While version control does keep track of changes over time, its focus is more on enabling collaborative work, efficiently managing changes, and supporting project workflows rather than positioning itself as merely a file storage solution.

The principal functions of version control include tracking software changes efficiently, which allows developers to understand the history of modifications, identify who made changes, and assess the evolution of the software. This capability streamlines collaboration among team members, leading to improved communication as everyone can see and discuss changes easily. Furthermore, isolating changes from the main task is critical in development, as it allows developers to work on new features or fixes without impacting the stability of the main codebase.

Therefore, while version control does involve storing different versions of files, the notion of permanent storage is not a core reason for utilizing such systems; rather, it's a byproduct of the comprehensive tracking and management of changes within a collaborative environment.