The correct option is C. Saving documents without a password. Explanation of Why Option C is Correct When we talk about securing files, we are referring to methods that protect the confidentiality, integrity, and availability of data. Saving documents without a password means that anyone who has access to the storage location (like a computer, cloud service, or USB drive) can open and view the contents of those documents without any restrictions. This lack of protection makes the files vulnerable to unauthorized access, theft, or alteration.

1. Confidentiality: Without a password, sensitive information can be easily accessed by anyone. For example, if a document contains personal information, financial data, or proprietary business information, saving it without a password exposes it to potential misuse.
2. Integrity: If unauthorized users can access the files, they can also modify or delete them, compromising the integrity of the data. This could lead to loss of important information or the introduction of errors.
3. Availability: While saving a document without a password may not directly affect its availability, if the document is altered or deleted by an unauthorized user, it may become unavailable to the rightful owner.

Explanation of Why the Other Options Are Wrong or Weaker A. Use of backup: - Backing up files is a crucial method for securing data. It ensures that copies of files are stored in a separate location, which can be restored in case of data loss due to hardware failure, accidental deletion, or malware attacks. Backups do not directly prevent unauthorized access, but they protect against data loss, which is a significant aspect of data security. B. Use of antivirus: - Antivirus software is designed to detect, prevent, and remove malicious software (malware) that can compromise the security of files. By using antivirus software, users can protect their files from viruses, ransomware, and other threats that could lead to unauthorized access or data corruption. This method is essential for maintaining the overall security of a computer system. D. Proper labelling of storage devices: - Proper labeling of storage devices helps in organizing and identifying data, which can prevent accidental loss or misplacement of files. While it does not directly secure files from unauthorized access, it aids in managing data effectively and can help in ensuring that sensitive information is stored in the correct, secure locations. Summary of Key Points

• Option C (Saving documents without a password) is not a secure method for protecting files, as it allows unrestricted access to anyone who can reach the storage location.
• Option A (Use of backup) is a valid security measure that protects against data loss.
• Option B (Use of antivirus) is essential for preventing malware attacks that could compromise file security.
• Option D (Proper labelling of storage devices) aids in data management but does not directly secure files.

Revision Summary

• Always use passwords for sensitive documents to ensure confidentiality.
• Regularly back up files to protect against data loss.
• Utilize antivirus software to safeguard against malware threats.
• Organize and label storage devices for better data management, but remember it does not secure files.