CompTIA Server+

Answer - A - John should use the Incremental backup method to finish the backup procedure in the least amount of time.

Key Takeaway: The incremental backup method backs up only those files that have changed since the most recent backup was performed. This save time and reduces tape utilization. When restoring from incremental backup, you need the most recent full backup, as well as every incremental backup you’ve made since the last full backup.