Please answer the following question: Here's a short story: Sara likes to throw her sponge ball around. After a while, she notices that rolls more quickly on her on her driveway so she had to chase it, then when she's playing on the grass. Which surface has the greatest resistance? (A) concrete driveway (B) grass?. What is the most sensical answer between "concrete driveway" and "grass"?
Answer:
grass