An open question means that the discussion is ongoing and one particular response has not been marked as a Verified Answer.

• If someone replies to a question with the correct answer, it's good practice to mark their reply as a Verified Answer. That way, others who have the same question can quickly see which reply is the most useful. 
  
  

• Suggest an Answer is used when another member reads the reply to someone else's question and believes that is the answer. Verified answers help members earn points and achievement badges. 

How do I make a question unanswered to continue the conversation?

• Simply click on Reject Answer. The question will now be back to an Open Question status.