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.

Example Input: Question: Ease of mobility _____ when the animal is decreased in size. 
 Option1: increase 
 Option2: decrease 
 Explanation: The larger the animal, the heavier the exoskeleton, making movement more difficult.
Example Output: increase

Example Input: Question: When viewing the climate model John saw that the less gases were in the atmosphere, the heat would be 
 Option1: Larger 
 Option2: Smaller 
 Explanation: More greenhouse gases trap more heat and warm the atmosphere.
Example Output: Smaller

Example Input: Question: A decrease in body size will cause a concomitant _____ in its surface area to volume ratio. 
 Option1: increase 
 Option2: decrease 
 Explanation: Size restriction: The final body size is limited because as the body size increases, the surface area to volume ratio decreases.
Example Output:
increase