List two types of agranulocytes.

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Agranulocytes are white blood cells that lack visible cytoplasmic granules. The two main types are lymphocytes and monocytes. Lymphocytes are small to medium cells with a large, round nucleus and little cytoplasm, and they include B cells, T cells, and NK cells that drive the adaptive immune response. Monocytes are the largest leukocytes with a kidney-shaped nucleus; they circulate and differentiate into macrophages and dendritic cells, playing key roles in phagocytosis and antigen presentation. The other options describe cells that are either red blood cells, platelets, or granulocytes (neutrophils, eosinophils, basophils) that contain granules, so they do not fit the category of agranulocytes.