Part 1. Definition
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).
Part 2. Example
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
Answer: scarce
Explanation: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.
Part 3. Exercise
Paragraph: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
 Question: When we lower the temperature of water it becomes 
 Choices: A)less dense 
B)more dense
Answer:
more dense