Final answer:
When R1 receives a packet destined for a certain IP address, it uses its routing table to choose the interface for forwarding. The interface is chosen based on the best matching route for the address in the routing table.
Step-by-step explanation:
The question pertains to how a router handles the forwarding of packets based on IP addresses. When R1 receives a packet destined for a specific IP address, it will consult its routing table to determine the appropriate interface through which to forward the packet. The routing table contains a list of networks and corresponding interfaces; the router matches the destination IP address in the packet with these networks and chooses the interface associated with the best route. Since the exhibit mentioned is not provided, we cannot specify the exact interface that R1 will use. However, the process generally involves matching the destination IP address with a network in the routing table and using the interface that corresponds to the best route (the most specific match and the lowest metric, if applicable).