instruction:
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:
Question: When you go into a cave, the rocks at shallower levels are _____ than the rocks on the surface. 
 Option1: younger 
 Option2: older 
 Explanation: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.
answer:
younger


question:
Question: A thin wire will carry _____ current than a large piece of wire. 
 Option1: more 
 Option2: less 
 Explanation: Thicker resistors offer less resistance than thinner resistors.
answer:
less


question:
Question: John looked at the graphs and noticed something. As the population of people grew smaller, the rate of global warming was 
 Option1: Less 
 Option2: Greater 
 Explanation: For example, more people on the Earth means more people contributing to global warming and pollution.
answer:

Less