I am testing my students' logic. What is the answer they should choose between "gravel" and "grassy hill"? Logic test: Ada was playing kickball. She kicked a ball into the gravel and noticed it was warm when she picked it up. She kicked it again onto a grassy hill, but this time the ball wasn't very hot when she retrieved it. In which surface did the ball travel the most? (A) gravel (B) grassy hill
A:
grassy hill