Which Smartsheet functionality helps ensure that deadlines are met?

Calendar integration is essential for ensuring deadlines are met because it allows users to sync their Smartsheet tasks and milestones with calendar applications. This functionality provides visual reminders and notifications, helping to keep users informed about upcoming deadlines. By integrating deadlines into a calendar format, team members can plan their work more effectively, allocate time to specific tasks, and ensure that they stay on track to meet their commitments.

The other options do not directly contribute to deadline management. Duplicate sheet creation is useful for reusing templates or starting points for new projects but does not inherently assist with tracking or meeting deadlines. Sheet deletion removes information and does not aid in project management. Linking sheets can enhance data visibility across different sheets but does not provide the same immediate deadline reminders and scheduling benefits that calendar integration offers.