Final answer:
The Activity log is the feature that enables licensed collaborators with Editor permissions to audit changes to a sheet, ensuring transparency and accountability.
Step-by-step explanation:
The feature that allows licensed collaborators with at least Editor permissions to audit changes made to a sheet is the Activity log. This feature is essential for tracking who made what changes, when, and to which parts of the sheet. The Activity log is designed to maintain a record of all the modifications and is particularly useful for teams working collaboratively on a document to ensure transparency and accountability. The activity log is a feature that allows you to track the changes made to a sheet by different collaborators.