What collaboration feature does Google Docs enable for users reviewing a document?

Google Docs enables users reviewing a document to make Suggested Edits, which is a key collaboration feature that enhances the reviewing process. When a user suggests an edit, it appears highlighted in the document, accompanied by a comment. This allows the original author to see the proposed changes clearly and decide whether to accept or reject them. This feature promotes a collaborative atmosphere where multiple reviewers can provide input without directly altering the original text, ensuring that all suggestions are visible and manageable.

Additional options like voice comments, live chat, and screen sharing do not directly align with the core functions of Google Docs for document editing and review. While voice comments could facilitate feedback, they aren't a built-in feature of Google Docs. Live chat is useful for real-time communication but is not specifically linked to document reviewing. Screen sharing, while helpful in some collaborative contexts, does not offer the same structured feedback mechanism as suggested edits in Google Docs. Thus, suggested edits stand out as the primary collaboration tool for document review in this context.