What are the answer choices? 
Okay then...
Geothermal power plants take hot water near earths surface and transfer that into energy to heat people’s homes ig i kind of forgot
        
                    
             
        
        
        
Answer:
D. decreased supply of energy
Have a good day!
 
        
             
        
        
        
I think the correct answer is C. An investigation is a type of research that involves observation and collection of data but it does not include a control. In an investigation, all data and information that is related to the subject matter are collected it does not think of any factors that may affect the subject.