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.

[Q]: Question: Greta has 15 resistors in series on her circuit, while Evan has 2 similar resistors in series on his circuit. Whose circuit has the greatest resistance? 
 Option1: Greta 
 Option2: Evan 
 Explanation: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.
[A]: Greta


[Q]: Question: Living things with great traits should produce _____ offspring than living things with better traits. 
 Option1: more 
 Option2: less 
 Explanation: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.
[A]: more


[Q]: Question: Mel stops after running down the street for exercise. As Mel's heart rate decreases, Mel's blood flow 
 Option1: decreases 
 Option2: increases 
 Explanation: Warming up exercises increases the blood flow to the muscles and increases the heart rate.
[A]:
decreases