Its true that the cerebral cortex is the highest portion of the brain. 
        
                    
             
        
        
        
I believe the answer for this would be B. Just using the process of elimination knocks out D and A, and plants make carbs not protein during photosynthesis :)
        
                    
             
        
        
        
In most neurons the resting potential has a value of approximately-70mV
        
             
        
        
        
they can cause a toxic effect or failure of therapy depending on the drug-nutrient combinations
 
        
                    
             
        
        
        
4.6 billion years ago
The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
i hope this helped, have a nice day! (o: