What information system allows users to search for documents via hypertext links?

The correct answer is the World Wide Web, which is a system for accessing hypertext documents on the Internet. It allows users to navigate between different documents through hyperlinks. When users click on these links, they are taken to other pages or sites, making information retrieval intuitive and user-friendly.

The World Wide Web transformed the Internet into a dynamic platform, where various types of media, including text, images, and videos, can be interconnected, enabling users to seamlessly explore vast amounts of information. This capability of linking different resources together is what distinguishes the World Wide Web from other networks and systems that may provide information, but do not emphasize the interconnected nature of documents through hyperlinks.

In contrast, DARPA is a research and development agency within the U.S. Department of Defense, which played a pivotal role in the early development of the Internet but is not a system for document navigation. An Internet service provider is a company that offers access to the Internet, facilitating user connections but not providing a document search or navigation system. ARPANET was the precursor to the Internet, primarily used for academic and government research, and while it laid the groundwork for the technologies that support the World Wide Web, it did not implement hypertext links in the way that the Web does