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White blood cells protect you against illness and disease. so Protect against pathogens

White blood cells are the ones that protect the body against pathogens. The correct option is A.

What are white blood cells?

White blood cells are components of the immune system. They aid the body's defense against infection and other diseases.

There are generally the following types of white blood cells:

  • Granulocytes (neutrophils, eosinophils, and basophils).
  • Monocytes
  • Lymphocytes.

Thus, the correct option is A.

For more details regarding white blood cells, visit:

https://brainly.com/question/17890844

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