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: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.
 Question: When you go into a cave, the rocks at deeper levels are _____ than the rocks on the surface. 
 Choices: A)younger 
B)older
[EX A]: older

[EX Q]: Paragraph: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.
 Question: Bob releases a deep breath, so that his lungs will have more painful pressure, making the size of Bob's chest 
 Choices: A)decrease 
B)increase
[EX A]: decrease

[EX Q]: Paragraph: The pupil automatically gets bigger or smaller to let more or less light in as needed.
 Question: Jim looked at his cat's eyes on a bright sunny day, then he looked at the eyes when the cat was in very low light inside the house. In the high light condition, the cat's pupils well be 
 Choices: A)smaller. 
B)larger
[EX A]:
smaller.