You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

[EX Q]: Paragraph: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.
 Question: If you were trying to push a box and wanted the one with the most friction which would you push? 
 Choices: A)light box 
B)Heavy box
[EX A]: Heavy box

[EX Q]: Paragraph: When a person smokes there are chemicals released by the tobacco that enter the lungs. Because the lungs have to work harder to remove the chemicals, the body has to work harder to get the air needed to survive.
 Question: If the amount of chemicals inside of Jim's lungs decreases, what will happen to the amount of air his lungs can process? 
 Choices: A)increase 
B)decrease
[EX A]: increase

[EX Q]: Paragraph: Water becomes more dense when it is colder and when it has more salt.
 Question: If Jim raises the temperature of water in his bathtub, what happens to the density of the water? 
 Choices: A)decreases 
B)increases
[EX A]:
decreases