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: Warmer molecules vibrate faster than cooler ones.
 Question: Lisa is cooling soup in the refrigerator. The molecules will begin to vibrate _____ as the soup cools down. 
 Choices: A)slower 
B)faster

Answer: slower


Question: Paragraph: Lighter, more streamlined vehicles need less energy.
 Question: If Jon subtracts more weight from his car, he will need to use _____ energy. 
 Choices: A)less 
B)more

Answer: less


Question: Paragraph: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
 Question: A sound wave that has less frequency will have _____ energy. 
 Choices: A)more 
B)less

Answer:
less