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: 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.
the flat pane refracts less light.

Question: A family that is very small, compared to one that is enormous, will have allele differences that are 
 Option1: smaller 
 Option2: greater 
 Explanation: The smaller a population is, the more allele frequencies may drift.
smaller

Question: Compared to microwaves do x-rays, which have a much higher wavelength than microwaves, have a 
 Option1: lower frequency? 
 Option2: higher frequency 
 Explanation: Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa.

lower frequency?