'Criteria' is actually the plural form of 'criterion', just like 'data' is the plural of 'datum'. So technicall, the correct sentences in the singular would be "What is your criterion" or "what is your datum".
But in [american] english we often if not usually don't make the distinction. I agree that duolingo should accept 'What is your criteria' in this case. I entered it just to see if it would be accepted, guessing that it would probably be marked wrong.
This question is so unfair! When I got it in English, I was marked wrong for answering 'what are your criteria' (I used 'qual', rather than 'quasi').
So I get it again, this time in Portuguese, this time with 'quasi,' so I translate it as 'which' [the answer I had been told was correct] and was marked wrong again!