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: So the higher an object is above a surface, the more potential energy it has.
 Question: If Mona is holding a baseball above a table and then increases the height of that baseball from the table, what happens to the potential energy of the baseball? 
 Choices: A)increases 
B)decreases
[EX A]: increases

[EX Q]: Paragraph: Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.
 Question: If Milo increases the number of crests of his wave, what happens to the frequency of his wave? 
 Choices: A)increases 
B)decreases
[EX A]: increases

[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 trains aerobic exercises, their heart muscles will become 
 Choices: A)stronger 
B)weaker
[EX A]:
stronger