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 more branching there is in isomers, the lower the boiling and melting points are.
 Question: If Jim is trying to raise the melting point of an isomer, what should he do to the number of branching points of the isomer? 
 Choices: A)decrease them 
B)increase them

A: decrease them
****
Q: Paragraph: For a given medium, sound has a slower speed at lower temperatures.
 Question: If Jim turns the thermostat down in his room while listening to music, what will happen to the speed of the sound waves in the room? 
 Choices: A)they will speed up 
B)they will slow down

A: they will slow down
****
Q: Paragraph: The greater the mass of the objects, the stronger the gravitational pull between them.
 Question: If Mona makes some clay balls and adds extra clay to them, increasing their mass, what happens to the gravitational pull between the two clay balls? 
 Choices: A)increases 
B)decreases

A:
increases
****