(Q).
Here's a short story: Harry noticed that he got a much less smooth ride when travelling with his bicycle over sand than when travelling over pavement. Riding his bicycle over _____ generates less heat (A) sand (B) pavement.  What is the most sensical answer between "sand" and  "pavement"?
(A).
pavement


(Q).
Here's a short story: Would a small, lightweight car be able to pass another vehicle quicker on the highway or would a big, heavy SUV be able to do so faster? (A) the lightweight car (B) the heavy SUV.  What is the most sensical answer between "a small, lightweight car" and  "a heavy SUV"?
(A).
a small, lightweight car


(Q).
Here's a short story: The tire rolled much slower once it left the dirt road and got into the brush. This is because there was much less friction on (A) the dirt road (B) the brush..  What is the most sensical answer between "brush" and  "dirt road"?
(A).
brush