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).

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 you spend very little time working out your muscles will be
Choices: A)smaller
B)larger
smaller

Paragraph: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.
Question: If Mona is running a race and her chest expands, what happens to the amount of air pressure in her lungs?
Choices: A)increases
B)decreases
decreases

Paragraph: The density of the atmosphere decreases with an increase in the height above sea level (altitude).
Question: What would happen to the atmosphere as Jim climbed higher up a mountain?
Choices: A)it would become less dense
B)it would become more dense
it would become less dense