You can edit existing Excel data by pressing the:________ key?

Explanation: When you click on a cell in your Excel spreadsheet and then press F2, you enter edit mode for that cell. This allows you to directly modify the contents of the cell, making corrections, updates, or adding information as needed.

Here's a breakdown of why the other options aren't used for editing data:

A. F1 Key: This key typically displays the Excel Help menu, which can be helpful for finding information about functions and features, but it's not used for direct data editing.

C. F3 Key: This key can have various functions depending on the context. In some cases, it might cycle through different cell references or paste a named range, but it's not the primary way to enter edit mode.

D. F4 Key: This key can be used to repeat the last action you performed, but it's not directly related to editing data.

So, remember F2 as your go-to key for quickly modifying data within your Excel cells.