Concept:Backup creates copies of data to keep it safe from loss or damage.
Explanation:Frequent backup means saving duplicate copies of files regularly.
If the original files are lost, deleted, or corrupted, the backup copies can be used to restore them.
This action directly safeguards the files and ensures their availability.
It does not primarily archive, modify, or scan for viruses.
Therefore, the main purpose of frequent backup is to protect the files.
Answer:B. Protect files