Final answer:
The left-hand panel in file explorers shows a high-level list of folders, while the right-hand panel shows the contents of the selected folder from the left panel.
Step-by-step explanation:
The relationship between the left-hand and right-hand panels in both File Explorer (Windows) and Finder (MacOS) can be described as follows: The left-hand panel, often referred to as the sidebar, displays a hierarchical view or a high-level list of folders, drives, and access to frequently used locations like 'This PC' or 'Favorites' on Windows, or 'Favorites' and 'Devices' on MacOS. The right-hand panel is the main content area where you can see the contents of the selected folder from the left-hand panel; it shows individual files, sub-folders, and additional details like file size, modification date, and file type.
The correct answer is:
C. The left-hand panel shows a high-level list of folders, and the right-hand panel shows the content of the selected folder.