instruction:
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).
question:
Paragraph: For a given medium, sound has a slower speed at lower temperatures.
 Question: If Jim turns the thermostat down in his room while listening to music, what will happen to the speed of the sound waves in the room? 
 Choices: A)they will speed up 
B)they will slow down
answer:
they will slow down


question:
Paragraph: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.
 Question: John observed that machines are not very helpful in performing work because they decrease the amount of force, and also make the distance the force is applied 
 Choices: A)Greater 
B)Lesser
answer:
Lesser


question:
Paragraph: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.
 Question: The _____ waters have the least dissolved oxygen. 
 Choices: A)warmest 
B)coldest
answer:

warmest