Multiple choice general knowledge

Which element in the blood helps the body fight against diseases and infections?

  1. Red Blood Cells

  2. Platelets

  3. White Blood cells

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

White blood cells (leukocytes) are the immune system's primary defense cells. They identify and destroy pathogens like bacteria and viruses through phagocytosis and antibody production. Red blood cells transport oxygen, while platelets help with clotting.

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