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: If Todd removes a resistor to the circuit, then the current will be 
 Option1: stronger 
 Option2: weaker. 
 Explanation: If we increase the resistance in a series circuit, by adding more resistors, then the total current decreases.
answer:
stronger


question:
Question: Dan is swimming into shallower water. The water the shallower he goes will be 
 Option1: younger 
 Option2: older 
 Explanation: Deeper aquifers typically contain older 'fossil water.'
answer:
younger


question:
Question: When a device become more efficient, its production of usable energy will go 
 Option1: up 
 Option2: down 
 Explanation: The more efficient a device is, the greater the percentage of usable energy it produces.
answer:

up