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 Mona moves her baseballs closer together, what happens to the gravitational pull between them? 
 Option1: increases 
 Option2: decreases 
 Explanation: The closer objects are, the stronger the gravitational pull between them.

SOLUTION: increases

PROBLEM: Question: Reed saw a cell through a microscope. He sees a cell has less visible mitochondria than the rest. This cell likely is _____ active compared to the others. 
 Option1: more 
 Option2: less 
 Explanation: Cells that are very active would typically have more mitochondria than cells that are less active.

SOLUTION: less

PROBLEM: Question: Which planet does the sun have the most gravity effect on? 
 Option1: Mars 
 Option2: Mercury 
 Explanation: The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.

SOLUTION:
Mercury