At the end of every single label, there’s a line break <br> and so making every new input ( in this case type Radio) goes to a new line.
<div>
<p>Would you recommend freeCodeCamp to a friend?</p>
<input type="radio" name="group" value="definitely" checked>
<label>Definitely</label><br>
<input type="radio" name="group" value="maybe">
<label>Maybe</label><br>
<input type="radio" name="group" value="not-sure">
<label>Not Sure</label><br>
</div>
