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: Carla takes a look at the populations of two countries. She finds Canada had about 37 million people in 2017. The United States had a population of 325 million in that same year. Therefore, the United States likely clears _____ land for agriculture and development than Canada. 
 Option1: more 
 Option2: less 
 Explanation: More people also means more clearing of land for agriculture and development.

SOLUTION: more

PROBLEM: Question: _____ input force will be needed on an inclined plane with a very steep slope. 
 Option1: more 
 Option2: less 
 Explanation: The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.

SOLUTION: more

PROBLEM: Question: Ian wants the transpiration rate to decrease in his leaves, so he will do what with the humidity levels 
 Option1: decrease them 
 Option2: increase them 
 Explanation: As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.

SOLUTION:
increase them