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: The upper rock layers are much younger.
 Question: Sarah is looking at layers of rock on a cliff face. She can see that the rock at the very bottom of the cliff are 
 Choices: A)older 
B)younger
older

Paragraph: We need to reduce our electricity consumption in order to reduce pollution.
 Question: A rapid increase in electricity consumption could mean _____ pollution. 
 Choices: A)less 
B)more
more

Paragraph: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.
 Question: If pressure has exerted more force on a rock and increased it's metamorphism, would it be 
 Choices: A)easier to determine what the original rock was 
B)harder to determine what the original rock was?

harder to determine what the original rock was?