Correct Answer: BTo ensure the web servers in the public subnet allow only secure communications, the analyst needs to remove any rules that permit unsecured protocols or unnecessary services. Rule 1 (inbound on TCP port 80) allows HTTP traffic, which is unsecure. Rule 3 (inbound on TCP port 3306) allows MySQL database connections, which are not necessary for a web server to function in a secure environment. Rule 4 (inbound on TCP port 3389) allows RDP connections, which should not be exposed to the public for security reasons. Therefore, removing rules 1, 3, and 4 will enhance security by restricting traffic to secure protocols and necessary services only.