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: 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
weaker

Paragraph: With less ozone in the stratosphere, more UV rays reach the ground.
Question: Carlos knows that there is less ozone in the stratosphere, and goes out on a sunny day. He puts on sunscreen knowing that the UV rays can reach the ground
Choices: A)less
B)more
more

Paragraph: Breast cancer is rare in teens. It becomes more common as women get older.
Question: What happens to Susie's chance of contracting breast cancer as she gets younger?
Choices: A)increases
B)decreases
decreases