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: The the planets are colder than sun because they are 
 Option1: less massive 
 Option2: more massive 
 Explanation: An object with more mass has greater thermal energy than an object with less mass because it has more atoms.

SOLUTION: less massive

PROBLEM: Question: Will found water from a source 10m from shore. Eric found water from a source 2m from shore. Whose water likely contains the most nutrients? 
 Option1: Will 
 Option2: Eric 
 Explanation: Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients.

SOLUTION: Eric

PROBLEM: Question: If Milo removes carbon atoms from his alkane while working in his science lab, what happens to the melting point of that alkane? 
 Option1: increases 
 Option2: decreases 
 Explanation: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.

SOLUTION:
decreases