Concept:Data backup is the practice of keeping a secondary copy of important files so they can be restored if the original data is lost or corrupted.
Explanation:Unforeseen data loss can occur due to system crashes, hard drive failure, virus attacks, or accidental deletion.
To prevent permanent loss, a user must maintain a separate copy of the data in a safe location.
This protective process is known as backing up the data.
Editing the data only modifies the existing content without creating any protection.
Creating the data simply generates a new file but does not safeguard it.
Defragmenting the data rearranges files on the storage device for better performance, but it does not prevent loss.
Only a backup allows the user to recover the original information after an unexpected failure.
Therefore, regular backups are essential for data safety and disaster recovery.
Answer:C. backup the data