Can My Professor Access the Version History of My Submitted .docx File?

Nope, they won't see anything but the final .docx that you submit unless there's version history from a service like OneDrive. Just make sure you protect your document carefully.

Possibly. You can check under File > Info > Version History. If it's available for you to see, then your professor might be able to see it too, depending on how you submit the document.

They can see the edit history only if you had the track changes feature turned on before submitting. Just know, if you turn it on later, it won’t capture the changes that were made before that.

Your professor might see the edit history if it was enabled, but there are ways to sanitize documents. You can use the 'Document Inspector' in MS Word to remove hidden details before submitting, or even print to PDF if that's an option.

You need to be really cautious with .docx files! They can contain a lot of hidden data. If you’re worried, consider using OpenOffice to save to that format instead.