I believe the answer would be B where the condensed chromosomes line up at the equator of the cell. 
        
             
        
        
        
A antigens, B antigens, and Rh
        
                    
             
        
        
        
I’m not sure that your choices are because it says select all that apply but I would tell the mother to stop giving the baby cows milk. The baby needs more iron which is in breast milk or formula if not she can become anemic and cows milk is not easy to digest for babies.
        
             
        
        
        
The central element for all living things is carbon, which is why you might often hear the phrase "carbon-based" lifeforms. Another term is often "organic matter"