Which macOS application allows you to back up your work to an external drive?

• A. iCloud Drive
• B. Time Machine
• C. Disk Utility
• D. Backup Pro

Answer: (B)

Time Machine is the macOS tool built specifically for backing up your Mac to an external drive. It automatically creates hourly, daily, and weekly backups as long as the drive is connected, and you can easily restore individual files or the entire system from those backups. That direct linkage to external drives and automatic, versioned backups make it the right choice for backing up work to an external drive.

iCloud Drive stores files in the cloud rather than backing up to a local external drive, so it doesn’t fulfill the same purpose. Disk Utility is for disk management tasks like formatting and mounting drives, not ongoing backups. A third-party option like Backup Pro exists, but the built-in Time Machine is specifically designed for this external-drive backup workflow and is the standard macOS solution.