Which of the following best describes the third line of defense in the immune system? A. The third line of defense prevents pathogens from entering the body and includes the skin. B. The third line of defense identifies the invader as a virus or bacterium and produces antibodies. C. The third line of defense includes a fever and phagocytes to battle the invader. D. Both B and C
Added by Matthew D.
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This is incorrect, as this describes the first line of defense, which consists of physical and chemical barriers like skin, mucous membranes, and secretions. Option B states that the third line of defense identifies the invader as a virus or bacterium and Show more…
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