Which of the following is NOT a way to protect a Word document?

Converting a Word document to a graphic is not a method for protecting its contents. While this action may prevent someone from easily editing the text within the document, it effectively removes the document from its original word processing format, making it inaccessible for text editing or collaboration altogether. This method does not provide direct security or protection mechanisms like the other options.

Password protection adds a layer of security by requiring a password to open or modify the document. Restricting editing permissions allows the user to set specific permissions that limit what others can do with the document, such as making changes or adding comments. Marking a document as final serves as a signal to others that the document is complete and should not undergo any further edits. These measures are intended specifically to safeguard the document's contents and integrity, whereas converting to a graphic changes the nature of the document itself.