They are all cells, they all have the same function
What are the choices? Anything positive is a healthy way.
I think it’s b. So choose that
<span>How can a person boost the immune system?
</span><span>-Vitamin D, A, C
-Protect your intestine (probiotics)
- A healthy diet, including fermented products and fruits and vegetables
-A healthy lifestyle: a restful sleep, regular exercise, good stress management</span>
