Neutrophils: produce antibodies. Incorrect. Neutrophils are a type of WBCs that are the first responders to an infection and often resort to phagocytosis as a means to kill the invading germs. They do not produce antibodies. They are part of our innate immune system which starts it’s functioning with birth and doesn’t need time to develop. They are hourly produced in our bone marrow.
All other options are correct. Leukocytes are produced in our bone marrow and are of 5 types. Namely Basophil, Neutrophil, Eosinophil, Monocytes and Lymphocytes. They help in fighting germs and infections in our body. They are all nucleated.