To preserve the original version of a workbook so you can make changes to a copy of it, which of the following would you do?

1) Save a copy of the workbook with a different name
2) Delete the original workbook
3) Make changes directly to the original workbook
4) Print the workbook and make changes on paper

To preserve the original workbook, save a copy of the workbook with a different name using the 'Save As' feature. This allows you to edit the new copy without altering the original file.

Explanation:

To preserve the original version of a workbook so you can make changes to a copy of it, you would Save a copy of the workbook with a different name. This can be done by going to File > Save As... and then typing a different name for the file in the Save As box. This approach allows you to maintain the integrity of the original document while freely editing the new version. It's a useful method for revision tracking as well; for example, by adding "-R1" or "-R2" to the file name to indicate different revision stages.

You can also use Excel shortcuts like selecting the entire worksheet or modifying cell styles to make changes to your workbooks more efficiently. Additionally, remember that if you make a mistake with a workbook, you can always re-download the original if necessary, so there's no need to worry excessively about making irreversible changes. However, always Save a copy before making significant revisions, instead of making changes directly to the original workbook.