Security groups in AWS act as an instance-level firewall to control inbound and outbound access to Amazon EC2 instances. They operate at the instance level and are associated with a specific instance or group of instances. Security groups allow you to define rules that specify the allowed inbound and outbound traffic based on protocols, ports, and IP addresses. They provide a stateful firewall, meaning that they track the state of a connection and automatically allow the return traffic for established connections.
I understand why it's B: Security Group due to the keyword "...as an instance level firewall"
but isn't the question here then a bit unclear since it also says "...to control inbound and outbound access" since the Security Group doesn't control the outbound?'
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