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: Farmer Bill got an older machine to sift his wheat. This machine causes him to grow _____ food. 
 Option1: more 
 Option2: less 
 Explanation: More advanced farming practices allowed a single farmer to grow food for many more people.
answer:
less


question:
Question: Will induces diffusion in a gas and a liquid. The liquid likely diffuses much 
 Option1: faster 
 Option2: slower 
 Explanation: This is also called diffusion, and the process is much faster in gases than in liquids, because the particles in gases are further apart.
answer:
slower


question:
Question: Reid notices changes in the weather and temperature from 100 years ago. This likely was caused by _____ greenhouse gas levels. 
 Option1: increased 
 Option2: decreased 
 Explanation: As greenhouse gases increase, changes will be more extreme.
answer:

increased