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: If Milo notices that the frequency of his electromagnetic wave seems to be decreasing, what does that say about the energy of the wave? 
 Option1: it's increasing 
 Option2: it's decreasing 
 Explanation: The higher the frequency of an electromagnetic wave, the greater its energy.
it's decreasing

Question: John was watching the particle accelerator and notating the reactions of the atoms. He observed that an object with more mass has a thermal energy that is 
 Option1: More 
 Option2: Less 
 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.
More

Question: As we fill a balloon with air the number of reactions in the balloon 
 Option1: increase 
 Option2: decrease 
 Explanation: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

increase