Multiple choice

What is the function of the white blood cell?

  1. It defends against infections and harmful bacteria

  2. It takes away carbon dioxide from your blood

  3. It stops you from dying of food poisoning

  4. It doesn't exist-obviously!
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A Correct answer
Explanation

White blood cells, or leukocytes, are a primary component of the immune system and are responsible for identifying and destroying pathogens.

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