The immune system protects the body from foreign substances and cells. Our immune system protects us from <span>tiny organisms such as bacteria, parasites, and fungi which cause infections.</span>
Correct answer: <span>A. The immune system
</span>Good luck with your studies, I hope this helps~!
It's the only answer thats a place with official jobs. A normal farm would be there too, but a backyard farm is someones hobby and not a paying occupation, so OSHA isn't in charge of that.
