Answer: Transport layer
Explanation: The Transmission Control Protocol / Internet Protocol both combine to aid aod transmission of data through the internet. While the Transmission control protocol handles the establishment and Maintainace of network connection through applications , the Internet Protocol handles how the established data is being sent. The Transmission Control Protocol is forms a part of the transport layer which aids in the data transmission m ensuring that data is sent to the correct source. The transport layer is able to avoid errors as it ensures that established c is nnectio is maintained until data exchange is complete.