Answer:
All blood cells originate from hematopoietic stem cells (HSCs). These stem cells are found in the bone marrow and have the ability to differentiate into all types of blood cells, including erythrocytes (red blood cells), leukocytes (white blood cells), and platelets. From HSCs, myeloid stem cells and lymphoid stem cells differentiate and give rise to the various types of blood cells. So, the correct answer is d. hematopoietic stem cell.
Step-by-step explanation: