It is likely that the state of someone's knowledge is "don't know" regardless of the actual state of affairs. If a person wanting to improve guesses correctly,

It is likely that the state of someone's knowledge is "don't know" regardless of the actual state of affairs. If a person wanting to improve guesses correctly, did they actually learn anything? Can they use that next time? They definitely can if they get it wrong and have a wrong answer to start research with. Edit - I see that I misread your comment, please disregard this. I thought the quiz had don't know and the other options you specified.