Which interface forwards traffic to the destination network?

G0/6 is the correct answer because it is the interface that connects the router to the destination network. In routing, a router makes forwarding decisions based on its routing table. The routing table contains entries that map destination networks to outgoing interfaces. When a packet arrives at the router, the router looks up the packet's destination IP address in its routing table. The entry that matches the destination network will indicate the next-hop IP address and the outgoing interface to use. Therefore, G0/6 would be the interface through which the router sends the packet towards its final destination. The other interfaces (G0/3, G0/16, G0/23) are incorrect because they are not the designated outgoing interface for the destination network according to the router's forwarding decision.