Explain the difference between traditional HTML and HTML5 in terms of structure, new elements, and browser features.

Introduction / Context:
The evolution from earlier versions of HTML to HTML5 is a major milestone in web development. This question focuses on how HTML5 differs from traditional HTML, especially in structure, semantic richness, and built in browser capabilities. Understanding these differences helps developers design modern, standards compliant websites that work well across devices and make good use of new platform features such as multimedia, offline storage, and JavaScript APIs. Interviewers often ask this topic to check if candidates understand why HTML5 became the new baseline for front end work.

Given Data / Assumptions:
- Traditional HTML refers to versions such as HTML4 and XHTML based markup.
- HTML5 is the current specification used by modern browsers.
- We assume standard desktop and mobile browsers that support HTML5 features.
- The question focuses on structural elements and browser features, not on server side technologies.

Concept / Approach:
Older HTML versions provided basic structural tags such as div, span, table, and simple form controls. Many developers used div elements for everything, which made markup less readable. HTML5 adds semantic elements such as header, footer, article, section, and nav that describe the purpose of different page regions. It also includes native audio and video support, canvas for drawing, local storage APIs, and many form input types. The correct option must capture these genuine differences, not myths about CSS removal or plugin requirements.

Step-by-Step Solution:
Step 1: Recall how older HTML uses mainly generic containers and provides almost no native multimedia or application style APIs. Step 2: Remember that HTML5 introduces semantic structure, better forms, and new APIs such as canvas, localStorage, and geolocation. Step 3: Compare each option and find the one that clearly describes added semantics, multimedia support, and APIs in HTML5. Step 4: Select the option that states HTML5 adds semantic elements and built in features, while older HTML is limited to basic document structure.

Verification / Alternative check:
If you look at any HTML5 tutorial or specification summary, you will see emphasis on new semantic tags, native audio and video, and JavaScript APIs. You can also open a simple HTML5 page with header, section, and footer in a modern browser without plugins, which confirms that those elements are now standard. Contrast this with older HTML manuals that rely heavily on generic div elements and plugin based solutions for rich media, which verifies the correctness of the chosen option.

Why Other Options Are Wrong:
Option B is wrong because HTML5 does not remove CSS support. In fact, CSS is more important than ever. Option C is incorrect since HTML5 is designed to work natively in modern browsers and does not require plugins. Option D is misleading because HTML5 is used for both desktop and mobile web pages. Option E is false because there are many structural and functional differences between HTML and HTML5, not just a changed version name.

Common Pitfalls:
A frequent misunderstanding is to think HTML5 is only about visual design changes, when in reality it adds semantic structure and APIs that improve accessibility and application development. Another pitfall is assuming that using the HTML5 doctype alone magically modernizes an old page without updating markup and JavaScript patterns. Developers should learn to use semantic elements properly, choose appropriate input types, and combine HTML5 with responsive CSS for the best results.

Final Answer:
HTML5 introduces semantic elements, built in audio and video support, and powerful APIs, while older HTML versions focus mainly on basic document structure and formatting.