What is the keyboard shortcut to copy selected cells in Excel?

The keyboard shortcut to copy selected cells in Excel is Ctrl + C. This combination is essential for quickly duplicating data from one location to another without altering the original content. When you select cells and press Ctrl + C, Excel copies the content, formatting, and even comments of those cells into the clipboard, allowing you to paste them anywhere in the workbook or even into other applications using Ctrl + V.

Using this shortcut effectively enhances productivity by streamlining the process of data management, especially when dealing with extensive datasets. Other options mentioned serve different functions: Ctrl + V is used for pasting, Ctrl + X for cutting (which removes the content from its original location), and Ctrl + A is a shortcut for selecting all contents in the current worksheet.