How are documents in the World Wide Web connected?

Documents on the World Wide Web are primarily connected through hyperlinks. These hyperlinks serve as references or navigational elements that link users from one document to another, allowing for an interconnected web of information. When a user clicks on a hyperlink, it directs the browser to the linked document, which can be located on the same website or a different one entirely. This hyperlinked structure is foundational to the functioning of the web, enabling easy navigation between a vast array of resources and content, thus creating a seamless user experience.

While options like email links, FTP, and IP addresses have their roles in the broader context of internet communication and data transfer, they do not facilitate direct document connectivity in the way hyperlinks do. Email links are used to create interactions via email rather than linking documents, FTP refers to transferring files between systems rather than connecting web documents, and IP addresses identify devices on the network but do not inherently link documents together. Hyperlinks specifically enable the web's structure, making them the crucial tool for connection.