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: Developing nations will also increase demands on natural resources as they build more factories.
 Question: Rupert is evaluating the impact of factories on the natural resources of developing nations. If Nation X added 100 new factories, it will _____ demands on their natural resources. 
 Choices: A)decrease 
B)increase
[EX A]: increase

[EX Q]: Paragraph: Rougher surfaces have more friction between them than smoother surfaces.
 Question: If Mona is comparing sandpaper with notebook paper and she determines that sandpaper is rougher then notebook paper, which object has less friction? 
 Choices: A)sandpaper 
B)notebook paper
[EX A]: notebook paper

[EX Q]: Paragraph: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH.
 Question: If Jim removes hydrogen ions from his solution, what will happen to the level of acidity? 
 Choices: A)it will become less acidic 
B)it will become more acidic
[EX A]:
it will become less acidic