TASK DEFINITION: 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.
PROBLEM: Question: Tina is putting on a sweater. As she stretches out the material, its elastic force 
 Option1: increases 
 Option2: decreases 
 Explanation: The farther the material is stretched or compressed, the greater the elastic force becomes.

SOLUTION: increases

PROBLEM: Question: If Mona is building a circuit and she adds more resistors in series, what happens to the total resistance of the circuit? 
 Option1: increases 
 Option2: decreases 
 Explanation: As more resistors are added in series, the total resistance of the circuit increases.

SOLUTION: increases

PROBLEM: 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.

SOLUTION:
more