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: If Jim moves his telescope from a mountaintop to Death Valley, a location with much air above it, what will happen to the amount of interference from the atmosphere? 
 Option1: increase 
 Option2: decrease 
 Explanation: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.

SOLUTION: increase

PROBLEM: Question: Mark is boiling alkenes and wants to see which will boil first; the larger ones or the smaller ones. The alkenes that will boil first are the ones that are 
 Option1: smaller 
 Option2: larger 
 Explanation: Larger alkenes have lower boiling and melting points.

SOLUTION: larger

PROBLEM: Question: Billionaire Joey McMoneystuffs added 3 new jets to his already large fleet of personal aircraft. One day, he decided not to have them race each other, burning no fuel and adding no greenhouse gases to the atmosphere. The Earth's heat index will 
 Option1: increase 
 Option2: decrease 
 Explanation: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.

SOLUTION:
decrease