The layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.

Network layer

Explanation: Network layer is the OSI model's layer which is at the third level. The layer supports the functioning of the  transferring of the data packet by establishing the particular route for them known as the logical paths.

The network layer also protects the router which examines every header files in the packet that includes the address of the destination and sources ports.

the answer will be d

answer; peter zenger;