Click the Exhibit button.
Referring to the exhibit, which statement is correct?
A. IP address 192.168.16.5 is on a directly connected interface.
B. Four routes have been leaked from the Level 2 area to the Level 1 area.
C. The path to IP address 192.168.16.6 is currently unavailable.
D. Rl has two Level 2 adjacencies and one Level 1 adjacency to other routers
Answer -B is correct
https://www.juniper.net/documentation/en_US/junos/topics/example/example-configuring-is-is-route-leaking-L2-to-L1.html
Check Last on this URL.
192.168.16.5 is directly connected on R3 however output provided in question is R1, so for R1 this subnet is not directly connected and even after Leaking from L2 to L1 you can see Metric of 10 for this IP.
Answer is B.
The Down keyword identifies the routes that have successfully leaked from the Level 2 area to the Level 1 area.
B is right
Answer is B
https://www.juniper.net/documentation/en_US/junos/topics/example/example-configuring-is-is-route-leaking-L2-to-L1.html