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: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.
 Question: John's company committed to increase greenhouse gas production worldwide. What likely happens to the global temperature in the future as a result? 
 Choices: A)it will increase 
B)it will decrease
[EX A]: it will increase

[EX Q]: Paragraph: Exercising muscles increases their size, and bigger muscles have greater strength.
 Question: If Jim starts exercising his muscles, would the strength of them 
 Choices: A)increase 
B)decrease
[EX A]: increase

[EX Q]: 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 faster in 
 Choices: A)water 
B)oxygen.
[EX A]:
oxygen.