Which option correctly pairs leukocyte types with their functions?

• A. Neutrophils and Erythrocytes
• B. Basophils release histamine; Platelets help with clotting
• C. Phagocytes chew up invading organisms; Lymphocytes remember, recognize, and destroy invaders
• D. Macrophages produce antibodies; T-cells produce insulin

Answer: (C)

Understanding what each white blood cell does helps you pair them correctly. Phagocytes, like neutrophils and macrophages, are the cells that eat and destroy invading organisms. Lymphocytes are the cells responsible for targeted, specific immunity: B cells and their antibodies remember and recognize pathogens, and T cells identify and destroy infected cells. This combination—phagocytes that consume invaders and lymphocytes that remember, recognize, and destroy—fits the described roles precisely, making it the best pairing.

The other options mix in incorrect ideas: one pairs a leukocyte type with a non-leukocyte (erythrocytes, which are red blood cells). Another mentions basophils and platelets together, but platelets are not leukocytes; they help with clotting, while basophils release histamine as part of inflammation. The last option incorrectly states macrophages produce antibodies and that T-cells produce insulin (antibodies come from B cells, and insulin from the pancreas).