The keyboard shortcut $CTRL+C$ is universally used in most computer applications to perform the Copy function.
When you select text, an image, or a file and press $CTRL+C$, the selected item is duplicated and placed onto the system's clipboard. This allows you to paste the item elsewhere using a different shortcut, typically $CTRL+V$.
Therefore, the primary function of the $CTRL+C$ shortcut key is to Copy.