A school is planning a field trip to the aquarium or to the zoo for students in grades 6 through 9. There are 100 students in each grade level and every student was asked which place he or she would prefer to visit. The bar graphs for the four grade levels are shown below. Aouanbaug 82282222 80 20 10 0 Grade 6 Vote for a Trip to Aquarium/Zoo Grade 7 Grade 8 In which grade level were the responses most consistent? Grade 9 BO