What feature helps to track changes and revisions in Smartsheet?

The feature that effectively tracks changes and revisions in Smartsheet is Version History. This functionality allows users to view a complete record of edits made to a sheet, including changes to cell values, formatting, and structure. Users can see who made specific changes and when, providing a comprehensive audit trail. This is particularly useful in collaborative environments where multiple team members may be updating the same document, as it ensures transparency and enables users to revert to previous versions if necessary.

The other choices focus on different aspects of project management. For instance, task assignment facilitates the delegation of responsibilities and tracking of who is accountable for which tasks, while project templates provide pre-designed frameworks to streamline project initiation. Gantt charts are a visual representation of project timelines and task progress but do not specifically track version changes within the document. Thus, Version History stands out as the dedicated feature for monitoring edits and maintaining a history of revisions.