Bone marrow responds to iron therapy by increasing erythropoietic activity. Which of the following in bone marrow would most likely indicate erythropoiesis?

Correct Answer: B

Rationale: Reticulocytes (B) are immature RBCs released from bone marrow during active erythropoiesis, increasing with iron therapy in iron deficiency anemia. Myelocytes (A) are myeloid precursors, ring sideroblasts (C) indicate sideroblastic anemia, target cells (D) suggest liver/hemoglobinopathy, and megakaryoblasts (E) are platelet precursors—reticulocytes directly reflect erythropoiesis.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.