Correct Answer - Option 4 : <h1>
Concept:
<h1> → tag used for largest heading size
<h6> → tag used for smallest heading size
Syntax:
<h1>Heading 1</h1>
Therefore option 1 is correct
Important Points:
The <h1>, <h2>, <h3>, <h4>, <h5> and <h6> elements are used to create headings in descending order of importance