Final answer:
The protocol that sends all information over the wire unencrypted is TELNET.
Step-by-step explanation:
The correct answer is c) TELNET.
TELNET is a protocol that is used to establish a remote connection between two devices over a network. It is an unencrypted protocol, which means that all the information sent over the wire is not encrypted and can be intercepted by anyone on the network.
FTP (a) stands for File Transfer Protocol, which is used to transfer files between a client and a server. SSH (b) stands for Secure Shell, a cryptographic network protocol that provides a secure remote login, secure file transfer, and secure TCP/IP connections. HTTP (d) stands for Hypertext Transfer Protocol, which is used to transfer data over the internet.