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).

[Q]: Paragraph: More advanced farming practices allowed a single farmer to grow food for many more people.
 Question: A farmer, using the newest farming practices, can expect to grow _____ crops. 
 Choices: A)more 
B)less
[A]: more


[Q]: Paragraph: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.
 Question: Would Jim's solution become more or less acidic if he decreased the concentration of hydrogen atoms in it? 
 Choices: A)more acidic 
B)less acidic
[A]: less acidic


[Q]: Paragraph: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.
 Question: Don notices that the patient's heart is expelling less blood with each stroke. The patient's heart has to beat _____ often to maintain consistent blood flow. 
 Choices: A)more 
B)less
[A]:
more