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: Dan wanted to be able to see the most light and detail when buying a telescope. Dan decided to buy a telescope that was 
 Option1: smaller 
 Option2: larger 
 Explanation: Larger telescopes can collect more light and see finer details than smaller telescopes.

SOLUTION: larger

PROBLEM: Question: As the rocket falls down through the troposphere and gets nearer to the Earth's surface, the air will be 
 Option1: warmer 
 Option2: cooler 
 Explanation: Air in the troposphere is warmer closer to Earths surface.

SOLUTION: warmer

PROBLEM: Question: Sarah is carrying two tubs, one is filled with rocks, the other with feathers. The tub with feathers will be lighter because it is 
 Option1: more dense 
 Option2: less dense 
 Explanation: A given volume of a denser substance is heavier than the same volume of a less dense substance.

SOLUTION:
less dense