Ok, so i went to your link via and when i typed this answer into Khan Academy it showed that it was incorrect. Rated it 3 to five stars.

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?