What does TCP stand for in TCP/IP?

TCP stands for Transmission Control Protocol. It is a fundamental protocol within the TCP/IP suite, which is the backbone of internet communication. TCP is responsible for delivering data between applications over a network by establishing a reliable connection. This is achieved through various mechanisms such as error-checking, ensuring that data packets are delivered in order, and retransmitting any lost packets, which is vital for maintaining data integrity.

In context, the other options do not accurately represent the function or definition of TCP. "Transfer Control Process" and "Technical Control Protocol" suggest an oversight of TCP's specific role as a protocol focused on reliable data transmission, while "Terminal Communication Protocol" also deviates from the established terminology used in networking. Therefore, the choice of Transmission Control Protocol is indeed the correct answer as it emphasizes not only the name but also the purpose of TCP within the realm of digital communication.