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: When you have air pressures change very little what happens to the wind? 
 Option1: decreases 
 Option2: increases 
 Explanation: Differences in air pressure over the surface of the Earth result in wind. The greater the differences in air pressures, the stronger the wind.
answer:
decreases


question:
Question: The least massive objects have _____ gravity than more massive objects. 
 Option1: higher 
 Option2: lower 
 Explanation: Less massive objects also have less gravity than more massive objects.
answer:
lower


question:
Question: If Jim wants to find a lower concentration of old fossil water he needs to move _____ into an aquifer? 
 Option1: deeper 
 Option2: shallower 
 Explanation: Deeper aquifers typically contain older 'fossil water.'
answer:

shallower