To protect your files and the state of your computer, the most relevant security method from the options provided is Antivirus Software.
Antivirus software specifically aims to detect, prevent, and remove malicious software (malware), which can compromise files and overall system integrity.
While Software Updates, Data Backup, and Operating System Patch are all important for maintaining system security and integrity, they serve different purposes:
- Software Update ensures that your applications are up to date, which can include security features but is not primarily a protective measure.
- Data Backup secures your files against loss but does not actively protect your computer from threats.
- Operating System Patch addresses vulnerabilities in the OS but is a form of update rather than a protective measure in itself.
In summary, antivirus software is directly aimed at protecting your files and the operating state of your computer.