Correct Answer: B
Explanation:
Sol. Lymphocytes produce antibodies or resisting proteins in blood plasma and are responsible for inactivating poisonous substances. Lymphocytes are very small white blood cells with large nucleus wanders in the whole body and their number is large in comparison of total W.B.C. count (about 25%). Like an army, lymphocytes protect the body by coordinating with all parts of the immune system.