What does version history in Google Docs allow a user to do?

Version history in Google Docs is a crucial feature that enables users to keep track of changes made to a document over time. This functionality allows users to see all revisions, including who made specific changes and when they were made. The ability to restore earlier edits is particularly important because it provides a safety net for users who might want to undo changes or retrieve information that was removed or altered in a subsequent version.

When a user decides to restore an earlier version, they can easily revert the document to that state, effectively undoing changes made after that point. This capability enhances collaboration, as multiple users can contribute to a document while maintaining the flexibility to roll back unwanted edits or to revisit past ideas and formats.

The other options, while potentially useful in their own contexts, do not accurately reflect the core functionality provided by the version history feature. Changing document formats, deleting previous versions, and sharing documents with new users are outside the primary scope of what version history is designed to accomplish.