Questions: What are the two categories of white blood cells? a.) Eosinophils and basophils b.) Lymphocytes and monocytes c.) Granulocytes and agranulocytes d.) Leukocytes and neutrophils

The answer is the third one (or C): Granulocytes and agranulocytes.

Explanation for each option: a.) Eosinophils and basophils - These are specific types of white blood cells, but they do not represent the two main categories. b.) Lymphocytes and monocytes - These are also specific types of white blood cells, but they fall under the broader category of agranulocytes. c.) Granulocytes and agranulocytes - This is correct. White blood cells are broadly categorized into granulocytes (which include neutrophils, eosinophils, and basophils) and agranulocytes (which include lymphocytes and monocytes). d.) Leukocytes and neutrophils - Leukocytes is another term for white blood cells in general, and neutrophils are a specific type of granulocyte, so this option is not correct.

Summary: The two categories of white blood cells are granulocytes and agranulocytes.