The answer would be, "C", "Plants". 
        
                    
             
        
        
        
There are 4 factors for evolution: mutation, gene flow, genetic drift, and natural selection. Natural selection is the strongest
        
             
        
        
        
The answer will be for you U
        
             
        
        
        
Geothermal energy = Eco-friendly
Cut down trees = not eco-friendly
Biomass instead of coal = eco-friendly
Turn lights on during the day = not eco-friendly
Carpool = eco-friendly 
Compost = eco-friendly