Which window in the Unity Editor is accessed to revert to a previous commit in Unity's Collaborate?

The option referring to Collab History is the correct choice because this window specifically provides a visual timeline of all changes made to the project within Unity's Collaborate. It allows users to see previous commits, including the commit messages, timestamps, and the user who made the changes.

In this context, reverting to a previous commit can be accomplished by accessing the Collab History, selecting the desired commit, and then opting to revert the project to that state. This functionality is essential for maintaining project integrity and continuity, especially when changes introduce issues or when you want to experiment with different features without losing earlier progress.

The other options serve different purposes in the Unity Editor. For instance, Project Settings is for configuring various project-level settings such as physics, graphics, and input management. Version Control refers more broadly to managing files and changes but does not specifically highlight the ability to revert to previous commits like Collab History does. Finally, the Asset Store allows users to access a marketplace for additional assets but is unrelated to version control or project history management. Therefore, Collab History is uniquely suited to the task of reverting to previous commits in the Unity Collaborate environment.