<span>While new cases have been reported in all regions of the world, approximately two-thirds are in sub-Saharan Africa, with 46% of new cases in Eastern and Southern Africa( hope i'm right)</span>
Answer:
A
Explanation:
Being healthy and fit does amazing things to your immune system, while it does not make it invulnerable it certainly does help immensely.
Oxygen transport and storage
(ik I gave three but just use two of them if you want)
