To add a list item, we need to add text between <li> and </li> tags.

<html>
 <body>
  <ol>
   <li>Tortoise</li>
  </ol>
 </body>
</html>
]]>

Awesome work! The l stands for list and the i stands for item.

Make sure you're starting with <li>, then adding the text, and finish with the </li> tag.