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.
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Question: Question: When we dig up rocks the deeper we get the rocks get 
 Option1: older 
 Option2: younger 
 Explanation: Older rocks are at the bottom and younger rocks are at the top.

Answer: older


Question: Question: If Mona begins using less nonrenewable resources what will happen to the length of time those resources will last? 
 Option1: decrease 
 Option2: increase 
 Explanation: Using less nonrenewable resources means that they will last longer.

Answer: increase


Question: Question: Jim is designing a new car and playing around with different materials. If he were to increase the weight of the vehicle, what would happen to the fuel efficiency of that vehicle? It would 
 Option1: increase 
 Option2: decrease 
 Explanation: Lighter, more streamlined vehicles need less energy.

Answer:
decrease