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: A piece of sandpaper was rubbed across a glass table, then the sandpaper was rubbed across some gravel. The friction will be greater between
Option1: the sandpaper and the glass table or
Option2: the sandpaper and the gravel.
Explanation: Rougher surfaces have more friction between them than smoother surfaces.

SOLUTION: the sandpaper and the gravel.

PROBLEM: Question: If Mona is building a new mirror and she wants it to refract less light, what should she do to the surface of the lens?
Option1: make it more curved
Option2: make it less curved
Explanation: The more curved the surface of a lens is, the more it refracts light.

SOLUTION: make it less curved

PROBLEM: Question: Mona is measuring electrons and their energy levels for a school science project. Some electrons are closer to the nucleus compared to others. Do closer electrons or electrons that are further away have greater energy?
Option1: closer
Option2: further away
Explanation: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

SOLUTION:
further away