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: If the gas is heated, the particles will move faster as they gain more energy.
 Question: Tina heats some oxygen gas. The oxygen particles will move 
 Choices: A)faster 
B)slower
faster

Paragraph: The closer objects are, the stronger the gravitational pull between them.
 Question: If Mona moves her baseballs farther apart, what happens to the gravitational pull between them? 
 Choices: A)increases 
B)decreases
decreases

Paragraph: It would be hard to get a big chunk of chocolate to dissolve in your milk or hot water. Maybe you could make hot chocolate from some smaller pieces like chocolate chips, but it is much easier to add a powder to your milk. This is because the smaller the pieces are, the more surface area they have.
 Question: Dean wants to melt chocolate to drink in his milk. He puts a big piece of chocolate in, and a small piece of chocolate in. The piece with more surface area, which will melt first, is the piece that is 
 Choices: A)bigger 
B)smaller
smaller