C.
One way to document your work within Power Query is to rename the steps to be more descriptive. This will make it easier to understand and follow the logic of the transformations you have applied to the data. Additionally, it will make it easier to troubleshoot any issues that may arise in the future. While creating a separate document in Word or letting Power Query automatically document your work may also be helpful, renaming the steps is a simple and effective way to document your work within Power Query. It is always a good practice to document your work to maintain transparency and ensure consistency in your data analysis processes.