Final answer:
EIGRP is the balanced hybrid routing protocol from the given options. It is a proprietary protocol developed by Cisco that combines features of both distance vector and link-state protocols. The correct option is d. EIGRP.
Step-by-step explanation:
The balanced hybrid routing protocol among the options provided is EIGRP (Enhanced Interior Gateway Routing Protocol). Cisco Systems created the proprietary protocol known as EIGRP. It combines the features of both distance vector routing protocols, such as RIP, and link-state routing protocols, like OSPF and IS-IS, making it a balanced hybrid routing protocol. It is designed to offer better scalability and flexibility in the network routing process. EIGRP uses algorithms and tables, including the DUAL algorithm, to calculate the best path for data routing, which in turn decreases the convergence time after a network change.
For example, consider a network where there are multiple paths to the same destination. EIGRP will analyze the various metrics of each path and choose the best one based on the configured parameters. This ensures efficient and reliable routing in the network.