Option C, AWS Network Firewall, is the correct answer. AWS Network Firewall is a fully managed, network firewall service that provides advanced network access control and monitoring capabilities. It allows you to create and manage stateful and stateless rules for network traffic, ensuring that only authorized traffic is allowed to flow to and from your resources. While AWS WAF, AWS Shield, and AWS CloudTrail provide security and monitoring capabilities, they do not offer the same level of network access control as AWS Network Firewall.