I believe the answer is c. because of Darwin's theory of evolution..
        
                    
             
        
        
        
 Coral reefs<span> are also being degraded by many other factors. The list of problems can seem endless: overfishing, fishing using cyanide and dynamite, pollution from sewage and agriculture, massive outbreaks of predatory starfish, invasive species, and sedimentation from poor land use practices</span>
        
             
        
        
        
There is no difference in mental abilities between genders