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.
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Question: Question: What happens to John's risk of contracting a disease when he is younger? 
 Option1: it decreases 
 Option2: it increase 
 Explanation: The older a person is, the greater their chance of developing a cardiovascular disease.

Answer: it decreases


Question: Question: If Jim is an endotherm would his body give off _____ heat if the blood flow to the surface of his body were decreased? 
 Option1: more 
 Option2: less 
 Explanation: On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.

Answer: less


Question: Question: What would happen to Earth's atmosphere if the amount of greenhouse gases in it was decreased? 
 Option1: warm up 
 Option2: cool down 
 Explanation: More greenhouse gases trap more heat and warm the atmosphere.

Answer:
cool down