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I think A. Hope this helped!!

White blood cells usually attacks pathogens and destroy them. The correct option is 1.

What are pathogens?

A pathogen is an organism that causes disease in its host, and the magnitude of the disease symptoms is alluded to as virulence.

White blood cells present in the body aids to destroy the pathogens entering in the body through any root.

Thus, the correct option is 1.

For more details regarding pathogens, visit:

https://brainly.com/question/18918957

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