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: Water density increases as salinity and pressure increase, or as temperature decreases.
 Question: By removing a pound of salt from a bucket of fresh water, could you cause the density of the water to 
 Choices: A)increase 
B)decrease?
decrease?

Paragraph: Higher-frequency waves have more energy.
 Question: Andy is noticing that all of the waves in the area are higher-frequency waves. Andy can then deduce that these waves have energy that is 
 Choices: A)more 
B)less
more

Paragraph: Gluons make quarks attract each other more strongly the farther apart the quarks get.
 Question: Tim has a quark and pulls it farther away from Rob, who also has a quark. What happens to the attraction force between the quarks? 
 Choices: A)it increases 
B)it decreases

it increases