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).

Paragraph: For a given medium such as air, sound has a slower speed at lower temperatures.
 Question: If Mary is blowing an air horn underwater and she raises the temperature of the water, what will happen to the speed of the sound waves generated by the air horn? 
 Choices: A)increase 
B)decrease
increase

Paragraph: In a series circuit, the resistance increases as more resistors are added in series.
 Question: By adding twenty more resistors to the series circuit in series, the total resistance of the circuit was 
 Choices: A)increased 
B)decreased
increased

Paragraph: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.
 Question: If there is less food in a place then more people will 
 Choices: A)live there 
B)die

die