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: A stream going across a low plain will have to do _____ cutting.
Option1: much
Option2: little
Explanation: In erosion, the higher the elevation, the farther the stream is from where it will reach base level and the more cutting it has to do.
little

Question: Do electric cars pollute more or less than gas cars?
Option1: more
Option2: less
Explanation: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.
less

Question: If valence electrons are close to an atom's nucleus, the atom is likely
Option1: bigger
Option2: smaller
Explanation: In bigger atoms, valence electrons are farther from the nucleus.
smaller