Question

multiple choice question which type of cell develops extensions that tear and produce cell fragments called platelets? a monocyte a megakaryocyte a macrophage a lymphocyte

Explanation:

Megakaryocytes are large bone - marrow cells. Their cytoplasmic extensions break off to form platelets, which are crucial for blood clotting. Monocytes are a type of white blood cell involved in immune response. Macrophages are phagocytic cells that engulf and digest pathogens. Lymphocytes are also white blood cells important for the immune system.

Answer:

B. A megakaryocyte