the look at the code shown to you in the editor: <a href="https://freecatphotoapp.com"></a>
this code is called an anchor element
it represents an element that the browser will understand to mean that whatever is nested in between its start and end tag will become clickable.
for eg if the browser sees this code <a href="www.google.com">Click Me!</a>
The browser will know that the words Click Me! are supposed to be shown as a link that takes the person to www.google.com website location. (the location is indicated by the href attribute included in the anchor tag)
So now you need to go ahead and give the browser some words in the middle of the anchor tag so it can make it into a link.
The words will go in between the opening and closing tags.