Which of the following is NOT a function of anti-virus software?

Anti-virus software is primarily designed to detect, prevent, and remove malware from computer systems. One of its key functions includes scanning files and the system for malicious software, which encompasses viruses, worms, trojans, and ransomware. When malware is detected, the software can take action such as quarantining infected files to prevent further harm to the system. Additionally, many anti-virus programs scan for vulnerabilities in order to identify potential security weaknesses that could be exploited by malware.

Removing video ads does not fall under the realm of anti-virus software functions. While some security software might include features that enhance overall system performance or privacy, the specific task of removing video ads typically relates more to ad-blocking software or extensions that focus on web browsing behavior rather than malware protection. As such, the correct answer highlights a function that is outside the typical scope of what anti-virus software does.