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 the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.
 Question: Jon was jogging, and quickening his pace. His heart is beating _____. 
 Choices: A)more 
B)less
[EX A]: more

[EX Q]: Paragraph: A thinner wire is more difficult for electrons to move through than a thicker wire.
 Question: If you use a thin piece of wire then electrons move 
 Choices: A)easier 
B)harder
[EX A]: harder

[EX Q]: Paragraph: Muscles that are exercised are bigger and stronger than muscles that are not exercised.
 Question: If a muscle is not exercised, it will become 
 Choices: A)bigger 
B)smaller
[EX A]:
smaller