The correct answer is D. Ethernet.
Ethernet is a local area network (LAN) protocol that allows computers to communicate with each other. It is not a service provided by the Internet.
The World Wide Web is a system of interlinked hypertext documents accessed via the Internet. It is the most common way to access information on the Internet.
E-mail is a system of exchanging digital messages over a computer network. It is one of the most popular uses of the Internet.
FTP is a file transfer protocol that allows users to transfer files between computers over the Internet.
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