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: Older rocks are at the bottom and younger rocks are at the top.
 Question: When we dig up rocks the deeper we get the rocks get 
 Choices: A)older 
B)younger
[EX A]: older

[EX Q]: Paragraph: The more tightly packed the particles inside the material are, the more dense we say they are.
 Question: Sasha is throwing bottles into the lake. Some bottles are filled with sand, and some only have a tiny bit of sand in them. The bottles with a tiny bit of sand will sink last because they are 
 Choices: A)less dense 
B)more dense
[EX A]: less dense

[EX Q]: Paragraph: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.
 Question: If Ben exercises daily, and Anna exercises only weekly, who has a stronger heart? 
 Choices: A)Ben 
B)Anna
[EX A]:
Ben