Answer:
they inject people with small amounts of deadly viruses to get us immune to it so its harder for the body to get sick. like the flu shot it basically kind of has the flu in it and when you get injected with it the body gets immune to it so its harder for you to get sick with the flu because your bodies already immune to that virus hopefully this helped
Explanation:
These are some of the examples: new married people,small children,teenagers, pre-school years,retired adults,basically new things to life or like for beginners. Hope this helps.
Would be the best choice Third-degree Burn
