Here's a short story: Driving an icepick into dirt results in a smoother motion then driving it into ice. This means that less heat is generated driving the icepick into the (A) ice (B) dirt. What is the most sensical answer between "dirt" and "ice"?
ice

Here's a short story: Tina is racing her two dogs. Her greyhound is slim, her rottweiler is heavy. The dog that gets faster more quickly is the (A) rottweiler (B) greyhound. What is the most sensical answer between "greyhound" and "rottweiler"?
rottweiler

Here's a short story: A valley is significantly rougher than a mountainside. This means that lava rolling down which surface will reach a greater top speed? (A) mountainside (B) valley. What is the most sensical answer between "valley" and "mountainside"?
mountainside

Here's a short story: To save money, the contractor stopped buying the costlier wall supports he was required to use and started using some cheaper ones instead. As a result, several roofs collapsed. Which wall supports were thinner? (A) The expensive wall supports were thinner (B) The cheaper wall supports were thinner. What is the most sensical answer between "Cheaper wall supports" and "Pricier wall supports"?
Pricier wall supports