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: Tommy traded in his four-cylinder Pinto for an eight-cylinder Mustang. The Pinto engine was 
 Option1: more powerful 
 Option2: less powerful. 
 Explanation: The more cylinders a car engine has, the more powerful its engine can be.
less powerful.

Question: To get the fastest reaction, raise the temperature of the reactants 
 Option1: lower 
 Option2: higher or 
 Explanation: When the temperature of reactants is higher, the rate of the reaction is faster.
higher or

Question: If Milo's country begins increasing the size of its population, what happens to its growth rate? 
 Option1: it decreases 
 Option2: it increases 
 Explanation: With exponential growth, the population starts out growing slowly. As population size increases, the growth rate also increases.

it increases