The question has 2 choices determined where the points on the wheel land when spun. the right side is good and the left side is bad on the wheel. If it's a good shooter he's on the right side as it was and you get points for how close you are.
So its a dial that with a target that has points depending on how close the needle is to the target, KB cant see it but they can so they need to tell him comparisons to get him as close to the target as he can