Hey! welcome to the freeCodeCamp’s community forums.
The a tag is used to link webpages together. so for example if you have a webpage which when you click it, takes you to google.com. You can do something like this:
// destination-link link text
| |
<a href="https://google.com"> a link to google </a>
even though the user will only see the text a link to google and when someone clicks it, the user will be taken to the google’s website.
Here in the same way, you need to a link to https://freecatphotoapp.com with the text “cat photos” in this challenge.