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: When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.
 Question: Scott rolls two balls together until they strike each other. When Scott rolls the balls softly, they barely move apart, and when Scott thrusts the balls at one another, they are apart a 
 Choices: A)great distance 
B)small distance
[EX A]: great distance

[EX Q]: Paragraph: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.
 Question: If one does no aerobic exercises, their heart muscles will become 
 Choices: A)stronger 
B)weaker
[EX A]: weaker

[EX Q]: Paragraph: As animals grow their bones get longer and bigger, they grow more hair, and are able to take care of themselves by getting food, shelter, and water.
 Question: Scuffy was a puppy, and now he is a sick dog. Now that Scruffy is smaller, shorter, and balder than before, Scrufffy can take care of himself 
 Choices: A)better 
B)worse
[EX A]:
worse