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: As computers have made work easier for people we have had to do 
 Option1: more work 
 Option2: less work. 
 Explanation: More advanced farming practices allowed a single farmer to grow food for many more people.

SOLUTION: less work.

PROBLEM: Question: Sarah's plants have been greatly photosynthesizing regularly, so that means that the plants now produce food in amounts that are 
 Option1: lesser 
 Option2: greater 
 Explanation: Less photosynthesis means that plants and phytoplankton produce less food.

SOLUTION: greater

PROBLEM: Question: Suzie is studying different countries and the amount of energy sources they use. She finds that the United States is much richer or wealthier than South Africa. Therefore, _____ uses more energy sources. 
 Option1: South Africa 
 Option2: the United States 
 Explanation: Richer nations use far more energy resources, especially fossil fuels, than poorer nations do.

SOLUTION:
the United States