What does a router do if it has no EIGRP feasible successor route to a destination network and
the successor route to that destination network is in active status?

A.
It routes all traffic that is addressed to the destination network to the interface indicated in the
routing table.

B.
It sends a copy of its neighbor table to all adjacent routers.

C.
It sends a multicast query packet to all adjacent neighbors requesting available routing paths to
the destination network.

D.
It broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.

Explanation:
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f07.shtml