The correct answer should be (d) The Krebs cycle
After Glycolysis, the Krebs cycle begins in the matrix of the mitochondrion.
        
                    
             
        
        
        
Natural selection is the process by which individuals who are best suited to the environment tend to leave (on average) more offspring than others.
Evolutionary changes take place over many generations and through millions of years of natural selection. For the genes to survive, they must be among the strongest. 
        
                    
             
        
        
        
Thalamus relays information from eyes to the visual cortex. Thalamus organizes inputs from sensory organs and routes them to the appropriate areas of the brain. I hope that this is the answer that you were looking for and it has helped you.