Malnutrition occurs when a person reveibes a defiency of food this leads to less energy produce by the cells of the body because they don t get enough nutrients to form (anabolism) and replace old or unusable things in the body and don t have glucose lipids proteins to brake down (catabolism) for the forming of the Atp the primary source of energy.
B) the decay of once-living things
Hope this helps have a great day!
D is the answer to the question
