One of the functions of the IP is to:
rearrange message packets in the same sequence as they were sent.
check for damaged or corrupt message packets and request for replacements, if needed.
slice up the message into smaller chunks of data called packets, to be sent over the network.
route message packets to the final destination.
label message packets with source and destination addresses.

route message packets to the final destination.

Explanation:

The main function of IP Address is to allocate a unique address to a device on a network so that any information sent to that device can reach it by referring to that particular address.

When one computer sends data, such as an email or a web form, its message gets parsed into small packets that contain the sending computer's Internet address, the receiving computer's address, and part of the message.

IP packet headers contain addresses that identify the sending computer and the receiving computer. Routers use this information to guide each packet across communication networks and connect the sending and receiving computers.

Therefore, one of the function of the IP is to: route message packets to the final destination.