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: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
 Question: John's town used to have little water, back when there were several thousand people. However, now that the town holds only a few hundred people, the water availability is 
 Choices: A)scarce 
B)plentiful
[EX A]: plentiful

[EX Q]: Paragraph: The more similar the DNA molecules of different species are, the closer the relationship is likely to be.
 Question: When we look at monkeys and humans they have a little matching DNA meaning they are. 
 Choices: A)similar 
B)very different
[EX A]: very different

[EX Q]: Paragraph: Air pressure is less at higher elevations.
 Question: Marcus is climbing a mountain, and notices that it is more difficult to breathe than it was before. This is likely because Marcus is at a 
 Choices: A)lower elevation 
B)higher elevation
[EX A]:
higher elevation