Final answer:
Inflammation, B cells, T cells; antibodies, vaccines, antibiotics; fever, mucus, skin; and histamines, phagocytes, complement system are correctly described examples of host defense mechanisms.
Step-by-step explanation:
The correctly described examples of host defense mechanisms are inflammation, B cells, T cells; antibodies, vaccines, antibiotics; fever, mucus, skin; and histamines, phagocytes, complement system.
These mechanisms play important roles in protecting the body from infections. For example, inflammation helps to create a physical barrier against the spread of infection and repairs tissue damage, B cells and T cells are involved in adaptive immune responses by producing antibodies and killing infected cells, and histamines, phagocytes, and the complement system are all involved in innate immune responses to pathogens.