I can’t show you the solution, but most elements in HTML share the same syntax.
Here’s an example of a paragraph element with one attribute:
<p class="bold">This is a paragraph element with one attribute</p>
You can use the same syntax to create an html element with the attribute specified in the challenge description.
Create an opening html tag and a closing html tag. Whilst the p element above has text content, for now your html element will be empty (i.e. just a pair of tags). Then add a lang attribute with the value en, using the same syntax as the attribute above.