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 least massive objects have _____ gravity than more massive objects. 
 Option1: higher 
 Option2: lower 
 Explanation: Less massive objects also have less gravity than more massive objects.

SOLUTION: lower

PROBLEM: Question: If a lens loses its curvature, it will refract _____ light. 
 Option1: more 
 Option2: less 
 Explanation: The more curved the surface of a lens is, the more it refracts light.

SOLUTION: less

PROBLEM: Question: John is thinking about parallax, and wants to test it. John holds his finger away from his eye, then draws it closer to his eye. At the farthest from his eye, the position will have changed to be 
 Option1: lesser 
 Option2: greater 
 Explanation: The closer your finger is to your eyes, the greater the position changes because of parallax.

SOLUTION:
lesser