How can you insert a comment in Excel?

Inserting a comment in Excel is an effective way to provide additional information or notes alongside specific cells. The correct choice involves right-clicking on the cell where you want to add the comment and then selecting the "Insert Comment" option. This method is intuitive and allows users to quickly attach remarks to their data, facilitating better communication and clarification within the spreadsheet.

The other methods mentioned do not correctly lead to the insertion of a comment. Selecting "Insert" from the menu does not directly pertain to adding comments in the latest versions of Excel where functionalities have been reorganized. Utilizing a keyboard shortcut like Ctrl + C is unrelated to comments, as that particular command copies content instead. Lastly, while the "Review" tab does contain comment functionalities—like adding or editing comments—the more straightforward right-click method is widely recognized as one of the simplest and quickest ways to insert comments.