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: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH.
 Question: If Jim adds hydrogen ions to his solution, what will happen to the level of acidity? 
 Choices: A)it will become less acidic 
B)it will become more acidic
Answer:
it will become more acidic