You are given a sentence and a question. You're expected to write the correct answer based on the sentence.

Sentence: Bryan enjoys playing basketball with his young daughter. After shooting some hoops, they sit down and roll the ball to each other. Sometimes Bryan takes her to his college gym and sometimes he goes to the courts at the park around the corner from his home. He notices that when they play roll-the-ball, the ball goes faster on the wooden gym floor than on the concrete basketball court at the park. Question: Which surface has more friction?
the concrete

Sentence: John throws a rubber ball and a glass ball against a brick wall. Question: Which ball is least likely to break?
Rubber ball

Sentence: Alvin and Cameron are planning a trip to another state.  Alvin travels by plane, while Cameron takes a car.  They leave at the same time. Question: After two hours, who has traveled farther?

Alvin