正解:C
In OSPF (Open Shortest Path First) networks, the designated router (DR) is elected based on the lowest router ID among all routers on a particular segment.
The router ID is a unique identifier for each router, which is usually the highest IP address on the router or can be manually set.
Since the exhibit indicates that Router Chicago has a lower router ID, it would be elected as the designated router for the segment 192.168.0.0/24.
References:
The concept of the designated router and the election process based on the router ID is covered in the Implementing and Operating Cisco Service Provider Network Core Technologies training materials, specifically in the sections discussing OSPF operations and configurations