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 a device were to become more efficient, it would produce _____ usable energy. 
 Option1: more 
 Option2: less 
 Explanation: The more efficient a device is, the greater the percentage of usable energy it produces.
more

Question: When in the stratosphere, Dean can tell that the temperature is getting cooler as the altitude he is at 
 Option1: increases 
 Option2: decreases 
 Explanation: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.
decreases

Question: When we have a few blocks we can make 
 Option1: many arrangements 
 Option2: few arrangements 
 Explanation: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.

few arrangements