Final answer:
Moving files and folders can alternatively be done by copying and pasting, which is a vital operation for file management on computers.
Step-by-step explanation:
Moving files and folders on a computer can indeed be done by dragging and dropping, but another common method is copying and pasting. Option A) Copying and pasting is the correct answer. This technique involves selecting a file or folder, using the 'Copy' function (often found in the right-click menu or accessible via keyboard shortcuts), navigating to the new destination, and then using the 'Paste' function to place a copy of the file or folder there. It's a basic computer operation that is essential for organizing and managing files.