a dream is what you hope can come true
I would say that it hasn't increased 20% because 1. if the starting percentage was 18%, you would see a larger precentage but that isn't the case.
I believe the correct answer is the sentence about snow cones.
If you would like my reasoning on why the others are incorrect please respond saying so and I will get back to you as quickly as I can.
Hope this helps.
B. The observers up front were asked to sit down so that the ones in the back could see. When you are talking about people, you use sit, not set.
