Store frequently changed critical data in Cloud Storage while retaining a record of all changes and enabling easy rollback of accidental edits or deletions. Which feature should you enable?

Object Versioning in Cloud Storage allows you to keep multiple versions of an object in the same bucket. When an object is overwritten or deleted, its previous versions are retained, enabling easy rollback to a prior state. This directly addresses the need to retain a record of all changes and recover from accidental edits or deletions. Bucket Lock prevents objects from being deleted or modified for a specified retention period, which is good for compliance but doesn't retain multiple versions of an object. Object change notifications inform you when an object changes but don't store previous versions. Object Lifecycle Management automates actions like deleting old objects or moving them to different storage classes, but it doesn't inherently create or manage multiple versions for rollback purposes.