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: In a science class, the professor demonstrates refraction to the class. First, the professor shows a curved lens from a binocular, and then a flat pane of glass, demonstrating that 
 Option1: the curved lens refracts less light 
 Option2: the flat pane refracts less light. 
 Explanation: The more curved the surface of a lens is, the more it refracts the light that passes through it.
answer:
the flat pane refracts less light.


question:
Question: Mark is boiling alkenes and wants to see which will boil last; the larger ones or the smaller ones. The alkenes that will boil last are the ones that are 
 Option1: smaller 
 Option2: larger 
 Explanation: Larger alkenes have lower boiling and melting points.
answer:
smaller


question:
Question: A wave with less energy than another will have a _____-frequency. 
 Option1: lower 
 Option2: higher 
 Explanation: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
answer:

lower