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.

Q: Question: A shark is swimming through the waters and the wind is blowing soft, and fast over many miles. The waves the shark is swimming in will be 
 Option1: larger 
 Option2: smaller 
 Explanation: The size of an ocean wave depends on how fast, over how great a distance, and how long the wind blows. The greater each of these factors is, the bigger a wave will be.

A: smaller
****
Q: Question: Dan needs to stay warm in the woods, and can bring one animal for body heat to sleep next to him. Given the choice between a horse and cat, Dan will choose the 
 Option1: cat 
 Option2: horse 
 Explanation: Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.

A: horse
****
Q: Question: Keely had just run a mile and was now running slower to _____ _____. 
 Option1: warm up 
 Option2: cool down 
 Explanation: When particles move more slowly, temperature is lower and an object feels cooler.

A:
cool down
****