Final answer:
Aplastic anemia (option C) is characterized by a deficiency of all blood's formed elements due to the failure of the bone marrow to generate new cells, not iron deficiency, which is the most common type of anemia.
Step-by-step explanation:
The type of anemia resulting from a deficiency of all the blood's formed elements, caused by failure of the bone marrow to generate enough new cells, is known as aplastic anemia. This condition can lead to a deficit in red blood cells, white blood cells, and platelets. Aplastic anemia can be inherited or acquired due to factors like radiation, medication, chemotherapy, or infection.
Iron deficiency anemia is the most common type, caused by insufficient iron for producing heme, which can affect teens, children, and those with diets low in iron. However, this is not the correct answer in this case, as it does not involve a failure of bone marrow but rather a deficiency in iron intake or absorption.
Sickle cell anemia and vitamin deficiency anemia are other forms of anemias caused by faulty RBC production but do not result from bone marrow failure. Sickle cell anemia is a genetic disorder causing abnormally shaped red blood cells. On the other hand, vitamin deficiency anemia can occur due to insufficient intake or absorption of B12 and folate, which are crucial for RBC production.