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.

[EX Q]: Question: The blood vessels near the top of the skin do what when it's cool? 
 Option1: enlarge 
 Option2: contract 
 Explanation: When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.
[EX A]: contract

[EX Q]: Question: Mary is taking measurements of the amount of oxygen in samples of water. If she measured the total levels of dissolved oxygen in a sample at 70 degrees fahrenheit and compared it to a sample at 80 degrees fahrenheit, which would contain more dissolved oxygen? 
 Option1: 80 degrees fahrenheit 
 Option2: 70 degrees fahrenheit 
 Explanation: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.
[EX A]: 70 degrees fahrenheit

[EX Q]: Question: Chin Lu watched the tsunami get stronger, and cause a _____ wave. 
 Option1: huge 
 Option2: tiny 
 Explanation: A wave caused by a disturbance with more energy has greater amplitude.
[EX A]:
huge