Given the question: Here's a short story: Tory took her dog for a walk, and noticed that when she threw the ball for him, he had an easier time finding it on the rocky surfaces than smooth cement, because it didn't roll so fast. Friction made the ball roll (A) further on the rocky dirt or (B) not as far?. What is the most sensical answer between "rocky dirt" and "cement"?
The answer is:
cement