How can I reply to the comments?

Web:

1. Go to your profile (on the top right corner)
2. Click on that post for which you want to check the comments
3. You will “Reply here” below each comment
4. Click on Reply here
5. Write your reply 
6. Click on reply

App:

1. Go to your profile (on the bottom right corner)
2. Click on that post for which you want to check the comments
3. You will find reply icon below each comment
4. Click on the reply icon & write it down
5. Click on Send button.

Video Tutorial: