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: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
Question: When we raise the temperature of water it becomes
Choices: A)less dense
B)more dense
less dense

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: Compared to a drywall screw with a coarse thread, would a lag bolt of the same length with a very fine thread require
Choices: A)fewer turns to drive into a hole>
B)more turns to drive into a hole
more turns to drive into a hole

Paragraph: Smaller sediments are dropped as the slope becomes less steep.
Question: Dan is watching sand fall down a plateau hill. The pieces of sand will be very
Choices: A)large
B)small
large