Change the bike rental's owner by updating the heading's text.

<html>
<body>
<h2 id="rental">Ben's Bike Rental</h2>
<script>
document.getElementById("rental").innerHTML = "Ron's Bike Rental";
</script>
</body>
<html>]]>

Make sure to pick document.getElementById("rental") followed by .innerHTML, =, then "Ron's Bike Rental".