Which term describes an immature red blood cell?

• A. White blood cell
• B. Red blood cell
• C. Immature red blood cell
• D. Platelet

Answer: (C)

An immature red blood cell is described as a reticulocyte, which is an erythrocyte that has just entered circulation and still contains remnants of RNA and other organelles from its recent maturation. In the context of the options, the term that directly describes the cell in question is the label that says “Immature red blood cell.” That phrasing matches the concept of an erythrocyte that has not yet fully matured. The other choices refer to different cell types (white blood cells or platelets) or to a mature red blood cell, which do not capture the immature stage. Reticulocytes are a key indicator of active bone marrow response to erythropoiesis and are particularly important when evaluating anemia or recovery after blood loss.