Which of the following is not a natural way of destroying bacterial infection?

Antibodies produced in the body.

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Production of HCl in the stomach.

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Antibiotics taken orally or by injection.

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Phagocytosis by WBCs.

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Solution

The correct option is C Antibiotics taken orally or by injection.
The natural way of destroying the bacterial infection is the production of the antibodies by the plasma B-cells in the body. The production of HCl also kills the harmful bacteria. The WBCs are the cells which can phagocyte and destroy the bacterial cells.
The intake of antibiotics is not the natural way.
Thus, the correct answer is option C.

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