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: More pollutants mean poorer air quality.
 Question: When a river gets emptied of a lot of waste chemicals it becomes 
 Choices: A)cleaner 
B)dirtier
cleaner

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
they spread out less

Paragraph: As the nail grows, more cells are added at the nail bed.
 Question: Milo has been growing his nails out for a very long time. As his nails get longer, what happens to the amount of cells added to them? 
 Choices: A)increase 
B)decrease

increase