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).

Let me give you an 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
The answer to this example can be: scarce
Here is why: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.

OK. solve this:
Paragraph: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.
 Question: A cell in a dog's large intestine shrank in surface area, which allowed the cell to take in less nutrients. This means that the cell's increased surface area allowed its functioning to 
 Choices: A)increase 
B)decrease.
Answer:
decrease.