Light PLEASE Thanks me I need points to ask questions
        
                    
             
        
        
        
The right answer is D - mass. 
        
                    
             
        
        
        
It means that the fit and well adjusted ones thrive and "make it", and the weak ones that can't adapt die. 
        
             
        
        
        
Answer:
The answer is SiO2
Explanation:
Silocon dioxide is written without a 1 after the silocon and with a 2 after the oxygen.