I think people should not be forced to answer. Cause answers should be well answered. I think questionairs should see how many skiped the answer until 12 answer could got, to get an idea how difficult their question was. may add a timout for around 7s for the skip button so people are confronted and could not avoid it to fast.

Allow to skip and answer an altwrnat answer. (if the questioner wish that.) otherwise allow to answer standard excuse like:

• Please think further, this are not the only options
• I do not understand the Question
• You need a better help than a crowd can give you