Protocols at which layer of the OSI model have the primary function of moving datagrams through an internetwork connected by routers?

"Network layer" is the correct answer to the given question.

Explanation:

The network layer is interconnected with different networks by providing permission to the network. This job is done by sending the packets in the network. The main aim of the network layer is to provide the logical addressing, routing, and fragmentation of packets.

The network layer is the layer of the OSI model whose primary function is moving the packets or datagrams in the internetwork which is connected by the routers.