Interface s0/0/0 is down could be true.
B. Interface s0/0/0 is down.
Explanation:
Network engineer is configuration the router and router tcpip address is 10.1.1.0.
Once end use connected to laptop he has check whether router is ping to gateway.
If returns are positive pinging reply then network is connected and he or she can access the network.
His or her workstation or laptop or desktop is not pinging and not connected to gateway or router then interface s/0/0/0 is down.
Since interface s/0/0/0 is down connectivity will be down. Network connectivity will be issue.