Final answer:
True statement regarding firewalls is that they monitor and control network traffic. They come in both hardware and software forms and cannot entirely prevent malware attacks but can block malicious traffic.
Step-by-step explanation:
The question is asking which statement is true about firewalls. Among the options given, the correct statement is: Firewalls Monitor and Control Network Traffic. Firewalls serve as a security measure to monitor and control the incoming and outgoing network traffic based on an organization's previously determined security rules. A firewall can be either software or hardware, or a combination of both, and it is designed to prevent unauthorized access to or from a private network. Firewalls do not only block incoming traffic; they can also manage outgoing traffic. While firewalls can help to prevent some kinds of malware attacks by blocking malicious traffic, they cannot completely prevent malware attacks, especially if malware enters through other means like a USB drive or an email attachment.