Which one of the following is the set of rules for transferring text, graphic images, sound, video, and other multimedia files on the World Wide Web?

The correct answer is the Hypertext Transfer Protocol, commonly known as HTTP. This protocol is specifically designed to facilitate the transfer of multimedia content over the internet, enabling the seamless delivery of text, images, sound, video, and other data types through web browsers. HTTP operates as a request-response protocol where the client, typically a web browser, sends requests to a web server, which then responds with the requested resources.

By using HTTP, users can access web pages and interact with multimedia content embedded on those pages. It is the foundational protocol that underlies the World Wide Web, making it possible to view and share various forms of media online.

The other options serve different purposes: File Transfer Protocol (FTP) is primarily used for transferring files between computers on a network, while Simple Mail Transfer Protocol (SMTP) is used for sending emails. Telnet Protocol is used for remote access to computers, allowing users to manage them over a network. Each of these protocols plays a crucial role in their respective areas, but HTTP is uniquely designed for the transfer of web content.