The main function of white blood cells in the body is to
A
Carry oxygen
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B
Help in clot formation
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C
Produce more red cells
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D
Protect body against diseases
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Solution
The correct option is D Protect body against diseases White blood cells or WBCs are also called leukocytes. They are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.