Final answer:
The correct statement about third-party add-on software is that it can compromise security if it contains malware.
Step-by-step explanation:
The correct statement about third-party add-on software is B) It can compromise security if it contains malware.
Third-party add-on software refers to applications or plugins that are developed by individuals or companies other than the device manufacturer. While some third-party add-ons can enhance device security, such as antivirus software or firewalls, there is also a risk that these add-ons may contain malware. Malware is malicious software that can exploit security vulnerabilities, steal sensitive information, or control the device without authorization. Therefore, it is essential to download and install third-party add-ons from trusted sources to minimize the risk of compromising device security.