Detailed Instructions: 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).
See one example below:
Problem: 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 lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is 
 Choices: A)scarce 
B)plentiful
Solution: scarce
Explanation: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.

Problem: Paragraph: This is also called diffusion, and the process is much faster in gases than in liquids, because the particles in gases are further apart.
 Question: Diffusion occurs slower in 
 Choices: A)water 
B)oxygen.
Solution:
water