A set of guidelines or standards that establishes the format in which files can be transmitted from one computer to another is

FTP is the file transfer protocol, a set of standards defining the format in which files move from one computer to another.

TCP is a transport protocol that carries data reliably but does not define file-exchange rules on its own.

IP handles addressing and routing of packets rather than the file format for transfer.

All of the above is wrong because only FTP is dedicated to standardised file transfer.

FTP separates a control connection for commands from a data connection for the file itself.

Secure variants like SFTP and FTPS add encryption to the classic FTP exchange.