Question: A worker finds that a barrel rolls more easily across a metal truck bed than it does over some gravel, which means there is more resistance on (A) the gravel (B) the metal truck bed.  Do not use A and B to answer the question but instead, choose between "metal truck bed" and  "gravel".
metal truck bed

Question: A beagle is running at the same time as a husky. Both are running for ten minutes in the same direction. The husky arrives at the destination first, and the beagle falls behind and stops. The dog that went further was the (A) beagle (B) husky  Do not use A and B to answer the question but instead, choose between "husky" and  "beagle".
beagle

Question: Emily was playing with her ball on the beach, and she noticed that it didn't roll too well over the sand. When she dropped it in the parking lot, though, it started rolling away rather quickly. Did the ball move further when dropped on (A) the sand or (B) the parking lot?  Do not use A and B to answer the question but instead, choose between "parking lot" and  "sand".
sand

Question: Jason was riding a four wheeler. It was harder to ride the four wheeler through the mud than on the gravel. Jason was able to move faster on the (A) mud (B) gravel  Do not use A and B to answer the question but instead, choose between "mud" and  "gravel".
gravel