The three lines of defense your body has against disease include all except?(1point)

Answer 1

1. Physical barriers such as skin and mucous membranes
2. Innate immune response including inflammation and phagocytosis
3. Adaptive immune response including antibodies and T cells

The correct answer:
4. The use of antibiotics. Antibiotics are not a natural defense mechanism of the body, they are external substances used to help the body fight off bacterial infections.