You are presented with the quiz "Which of the following can help reduce global warming?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "gases released during the use of fossil fuels causes global warming" and "advantages Geothermal energy can be used instead of fossil fuels to produce electricity". 

So, what's the best answer to the question?


 

        Adoption of geothermal energy   