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).

[EX Q]: Paragraph: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.
 Question: If you need to turn a screw more times that requires 
 Choices: A)less force 
B)more force
[EX A]: more force

[EX Q]: Paragraph: A sunscreen with a higher SPF value protects the skin longer.
 Question: John was analyzing some of the results from his sunscreen study. He found that a lower SPF protects the skin 
 Choices: A)Shorter 
B)Longer
[EX A]: Shorter

[EX Q]: Paragraph: Water density increases as salinity and pressure increase, or as temperature decreases.
 Question: If you mixed salt water and regular water which would sink? 
 Choices: A)regular water 
B)salt water
[EX A]:
salt water