Final answer:
Bill can verify that the backups have been completed on his Mac by checking the Time Machine preferences, looking for a notification, or opening the Time Machine window to view the backup timeline.
Step-by-step explanation:
The question concerns the process of how Bill can confirm that data backups have been completed successfully on a Mac using Time Machine. Bill can verify that the backup process has been completed in several ways:
- Check the Time Machine preferences - By opening the Time Machine preferences, Bill can see when the last backup was completed.
- Receive a notification - macOS typically sends a notification once a backup is successfully finished, which Bill can also look for.
- Open the Time Machine window - By entering Time Machine, Bill can check the timeline for completed backups.
Therefore, the correct answer to how Bill will know when data has been backed up to each drive is A) Check the Time Machine preferences, B) Receive a notification, and C) Open the Time Machine window.