Given the question: Question: Kayla is riding her tricycle. She can go around the block in five minutes on the concrete sidewalk, but it takes her ten minutes to ride around the block on the grassy yard. Kayla can go faster on the concrete sidewalk because it has (A) more resistance (B) less resistance. Do not use A and B to answer the question but instead, choose between "grassy yard" and "concrete sidewalk".
The answer is:
concrete sidewalk