instruction:
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).
question:
Paragraph: For a given medium such as air, sound has a slower speed at lower temperatures.
 Question: If Mary is blowing an air horn underwater and she lowers the temperature of the water, what will happen to the speed of the sound waves generated by the air horn? 
 Choices: A)increase 
B)decrease
answer:
decrease


question:
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: Rocks that are buried very shallow are _____ than rocks on the surface. 
 Choices: A)newer 
B)older
answer:
newer


question:
Paragraph: Gluons make quarks attract each other more strongly the farther apart the quarks get.
 Question: When there are low levels of gluons in quarks it becomes 
 Choices: A)weaker 
B)stronger
answer:

weaker