Question

what is the function of white blood cells?
to carry oxygen around the body

to help our blood clot when get injured

to defend our body against disease

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Explanation:

White blood cells (leukocytes) are key components of the immune system. Carrying oxygen is the role of red blood cells, and blood clotting is done by platelets. White blood cells fight pathogens like bacteria and viruses to protect against disease.

Answer:

C. to defend our body against disease