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: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.
 Question: A human who eats an animal that is low on the food chain should take in _____ toxic metals. 
 Choices: A)more 
B)less

A: less
****
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

A: more force
****
Q: Paragraph: Water flowing over a steeper slope moves faster and causes more erosion.
 Question: Lana is watching two waterfalls. The first waterfall is very steep, and the other is just a slope. The waterfall which will have the most erosion at the bottom is the one with the water which falls 
 Choices: A)slower 
B)faster

A:
faster
****