Why can't I answer someone's question on here when its not my own post?

Natalie L. #14297

I've noticed that I'm only capable of answering questions when related to my own personal post. But when someone else asks a question on here I dont have the option no where to reply to it. All I have is: follow this question or report this.
Why cant I reply like other members???

Mike

Check if the a best answer was picked already
You can see a green boxed check
This means that the discussion is closed

Natalie L. #14297

Ohhh ok that explains! There was a green box on one of the answers. Thank you Mike