What technology did Tim Berners-Lee develop that contributed to the creation of the World Wide Web?

Tim Berners-Lee developed HyperText Markup Language, or HTML, which is fundamental to the structure of web pages on the World Wide Web. HTML provides the basic building blocks for creating and organizing web content, allowing documents to be formatted and hyperlinked to one another. This enables users to navigate from one webpage to another seamlessly, which is a core function of the web.

The other technologies mentioned serve different purposes in web development. Cascading Style Sheets (CSS) are used for styling and layout of web pages, JavaScript is employed for adding interactivity and dynamic features, and XML is a markup language used primarily for data interchange rather than for creating web pages. While these technologies are important for enhancing the functionality and appearance of web content, HTML is the foundational technology directly linked to Tim Berners-Lee's work in creating the World Wide Web.