Which three technologies are used together to create Web pages that adapt to devices such as smartphones and smart TVs?

Which three technologies are used together to create Web pages that adapt to devices such as smartphones and smart TVs?

• A. HTML5, XML and JavaScript
• B. CSS, JavaScript and PHP
• C. HTML4, CSS2, JavaScript
• D. HTML5, CSS and JavaScript

Answer: (D)

Responsive design hinges on combining content, presentation, and behavior so a page adapts to different screen sizes. HTML5 provides modern structural elements and capabilities that help organize content in a semantic, flexible way, and it supports multimedia and APIs that are common in contemporary layouts. CSS handles how things look and how layout flows, with features like responsive grids, flexible images, and media queries that apply different styles at different viewport widths. JavaScript adds behavior and dynamic adjustments—detecting screen size, toggling classes, or rearranging elements to optimize the user experience across phones, tablets, and TVs.

XML isn’t used for styling or structuring pages in a way that supports responsive design, and PHP is server-side, affecting what content is sent rather than how it behaves on the client. Older standards like HTML4 and CSS2 lack many of the modern capabilities needed for seamless adaptation. So the combination of HTML5, CSS, and JavaScript is the best answer for creating web pages that adapt to devices.