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: The hotter a main sequence star is, the brighter it is.
 Question: A main sequence star that is not bright is not among the _____ stars 
 Choices: A)hottest 
B)coolest
hottest

Paragraph: So the higher an object is above a surface, the more potential energy it has.
 Question: If Mona is holding a baseball above a table and then increases the height of that baseball from the table, what happens to the potential energy of the baseball? 
 Choices: A)increases 
B)decreases
increases

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: If Mona fills up a cup with water and places that water into the freezer, what happens to the density of the water as it cools down? 
 Choices: A)increases 
B)decreases

increases