Which feature allows real-time collaboration in Google Sheets?

Real-time collaboration in Google Sheets is facilitated by the feature that enables simultaneous editing and sharing. This allows multiple users to work on the same spreadsheet at the same time, seeing each other's changes in real time. As individuals make edits or contributions, they appear immediately for all users, fostering a dynamic and interactive collaborative environment.

This functionality is essential for team projects where seamless communication and immediate updates are crucial for maintaining the flow of information. It encourages teamwork and quick decision-making, as collaborators can discuss changes directly in the document without needing to send files back and forth or wait for others to finish their portions before adding their input.

The other features mentioned, while beneficial in other contexts, do not specifically address real-time collaboration. Offline access allows users to work without an internet connection; print formatting options are aimed at improving the appearance of printed documents; and data validation is used to control what data can be entered into specific cells. None of these features enable simultaneous contributions in the same way that simultaneous editing and sharing does.