Final answer:
Pernicious anemia requires lifelong administration of intrinsic factor to prevent anemia.
Step-by-step explanation:
The correct answer is d) Pernicious anemia.
Pernicious anemia is a condition that occurs due to poor absorption of vitamin B12. It is characterized by a deficiency of intrinsic factor, a substance produced by the stomach that is necessary for the absorption of vitamin B12 in the small intestine.
Without intrinsic factor, vitamin B12 cannot be absorbed, leading to pernicious anemia. This condition requires lifelong administration of intrinsic factor to prevent the development of anemia.