Which sequence of stages is most typical in the development of a nutrient deficiency resulting from inadequate

The sequence of stages is declining nutrient stores, abnormal functions within the body and overt signs. The main deficiency is caused by an inadequate intake of a nutrient and a secondary deficiency is cause by a circumstance that decreases absorption, accelerates use, increases excretion or destroys the nutrient.

Its either c or d. i would go with d though, because im not sure if its legal in all of the us