Question

wbcs formed in the bone marrow and destroy pathogenic bacteria through phagocytosis. a lymphocyte b monocytes c oncology d antibody

Explanation:

Monocytes are white - blood cells (WBCs) formed in the bone marrow and can perform phagocytosis to destroy pathogenic bacteria. Lymphocytes are mainly involved in immune responses like antibody - production. Oncology is the study of cancer. Antibodies are proteins, not cells that perform phagocytosis directly.

Answer:

B. monocytes