What feature in Microsoft Word can be used to collaboratively edit a document with others?

In Microsoft Word, the feature that facilitates collaborative editing is Track Changes. This tool allows multiple users to make edits and suggestions within the document while keeping a clear record of all modifications. When Track Changes is enabled, any additions, deletions, or formatting changes made by different users are highlighted, and comments can be added to provide context for the edits. This is particularly useful in collaborative environments, such as when multiple team members need to provide input on a document.

The ability to see who made changes and the option to accept or reject those changes empowers users to collaborate effectively while maintaining control over the final content. In contrast, spelling check, text highlighting, and word count do not facilitate collaboration in the same manner; they serve different functions such as ensuring language accuracy or managing document length, but do not track contributions from multiple editors.