What must be included in the EIGRP topology table?

In EIGRP (Enhanced Interior Gateway Routing Protocol), the topology table is crucial as it contains all the routes that have been learned from neighboring EIGRP routers. This includes the information about every destination network that the router has received from its EIGRP peers, irrespective of whether those routes are currently being used in the routing table. Each entry includes the metrics, next-hop information, and route status.

The reason this answer is correct is that the topology table is a fundamental element of EIGRP's operation, which facilitates the process of route computation. By having a complete picture of learned routes, the router can perform its path selection process and ensure optimal routing.

The other choices, while related to aspects of EIGRP or routing in general, do not accurately reflect what the topology table specifically contains.