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.
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Question: Question: John observed that machines are not very helpful in performing work because they decrease the amount of force, and also make the distance the force is applied 
 Option1: Greater 
 Option2: Lesser 
 Explanation: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.

Answer: Lesser


Question: Question: A ball that is on the ground will have _____ potential energy than a ball on the top of the empire state building about to be dropped off . 
 Option1: more 
 Option2: less 
 Explanation: So the higher an object is above a surface, the more potential energy it has.

Answer: less


Question: Question: Cold air is able to fill less space than warm air because it is 
 Option1: more dense 
 Option2: less dense 
 Explanation: Warm air is less dense than cool air, so it rises higher in the troposphere.

Answer:
more dense