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 farther the sound waves travel away from the source, the more spread out their energy becomes.
 Question: If Milo is listening to the radio and he moves closer to the radio in the room, what happens to the sound waves entering his ear? 
 Choices: A)they spread out less 
B)they spread out more
[EX A]: they spread out less

[EX Q]: Paragraph: We need to reduce our electricity consumption in order to reduce pollution.
 Question: Will increased his house energy consumption. He has _____ his personal levels of pollution. 
 Choices: A)increased 
B)decreased
[EX A]: increased

[EX Q]: Paragraph: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.
 Question: James wants to create a solution that is less acidic than others, so his concentration of hydrogen ions will be 
 Choices: A)higher 
B)lower
[EX A]:
lower