The answer is B. artificial selection. Artificial selection is . a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only forms that have certain desirable inheritable characteristics (such as, in this case, cows that produce the most milk).
The nephritic syndromes produce a proliferative inflammatory response, whereas the nephrotic syndromes produces increase permeability of the glomerulus .Nephrotic cause the body to secrete much protein in the urine while nephritic cause swelling and inflammatory of the glomerulus in the kidney.
Usually 10 to 100 micrometers across (about 10 times the size of a prokaryotic cell)
