Option A. is the correct answer the other three are not professional behaviour if you would like an explanation as to why they are not just comment
It’s either b or c, but my final answer would be C
<span>Filtering of packets as they leave the network destined for the internet is called packet filtering. This firewall technique is also known as static filtering, and it is mainly used to control network access through the process of monitoring both outgoing and incoming packets. Along with monitoring, it functions to allow the packets to pass or halt which takes place based on the source of Internet Protocol.</span>
