TASK DEFINITION: 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.
PROBLEM: Question: Smaller dogs have a slower growth rate than big dogs so that means they get: 
 Option1: Smaller 
 Option2: Larger 
 Explanation: In exponential growth as the population size increases, the growth rate also increases.

SOLUTION: Smaller

PROBLEM: Question: The air gets thinner when it is 
 Option1: hot 
 Option2: cold 
 Explanation: Increasing air temperature decreases atmospheric pressure.

SOLUTION: hot

PROBLEM: Question: If an electromagnetic wave has a higher frequency than another wave, it will have _____ energy. 
 Option1: more 
 Option2: less 
 Explanation: The higher the frequency of an electromagnetic wave, the greater its energy.

SOLUTION:
more