Answer is B
Increase the odds by creating relationships among organisms. 
 
        
                    
             
        
        
        
Answer:
Selective Optimization With Selection.
Explanation:
It is known that this theory was widely known from 1980s and was postulated by a man called Baltes. Baltes here argued that as individuals advance through life they are increasingly faced by age related deficits which place limits on their cognitive and behavioral resources. Tackling these limits placed on domains, individuals will begin to invest resources into particular styles and behaviors that are deemed adaptive to the new constraints. 
 
        
             
        
        
        
It would require that the csf acts exclusively on : Myeloblasts
myeloblasts is a unipotent stem cell, which differentiate into one of the effectors of the granulocyte series. 
It is commonly found in bone marrow.
        
                    
             
        
        
        
You’re answer is C. I hope this helps!
        
             
        
        
        
jagged line of protein discs which attach thin filaments from
end to end,  trace the boundary where
sarcomeres connect, thick  type of
smallest muscle unit: composed of staggered arrays of many myosin molecules
which interact with actin when calcium is present.