Yes. To reply to a comment, follow these steps:
1. Go to the story containing the comment
2. Look for the comment you would like to reply
3. Click on the Reply button on bottom right side of the comment
4. You will see Write a reply here…
5. Once you start typing, a Publish button will appear
6. When finish typing your reply, click the button Publish
7. You will get a confirmation message after publishing it