Which concept involves the visualization of files and folders on a computer?

The concept that involves the visualization of files and folders on a computer is the desktop. The desktop serves as the primary user interface in many operating systems, providing a visual representation of files, folders, and applications through icons. Users can interact with these icons to access their content or launch applications directly from the desktop, making it a central feature for file management and organization.

While other options like the data interface or file navigator may relate to file management tasks, the desktop specifically refers to the overarching visual environment where users can see and organize their files in a straightforward and accessible manner. The workspace concept might refer to an area where tasks are executed, but it doesn't encapsulate the specific visualization aspect of files and folders found directly on the desktop.