instruction:
You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.
question:
Question: If Mona is in her greenhouse monitoring her plants and she decides to raise the temperature inside, what happens to the rate of cellular respiration her plants exhibit? 
 Option1: decreases 
 Option2: increases 
 Explanation: Temperature affects the rate at which photosynthesis, cellular respiration and decomposition take place. The rate of reaction increases with increasing temperature and decreases at lower temperatures.
answer:
increases


question:
Question: If Milo wants to make his water saltier and begins removing salt to the glass, what happens to the density of the glass of water? 
 Option1: decreases 
 Option2: increases 
 Explanation: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.
answer:
decreases


question:
Question: David turns down the temperature in the cabin, so energy of sound waves is moving 
 Option1: slower 
 Option2: faster 
 Explanation: At a lower temperature, particles of the medium are moving more slowly, so it takes them longer to transfer the energy of the sound waves.
answer:

slower