Respuesta :
Answer:
A.) quarantine of the sick
Step-by-step explanation:
A lot of people on this same question were saying that A is right.
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Please do not come at me...
Answer:
It's C: vaccination against disease
Step-by-step explanation:
I know many people are saying A, B, or D but their all wrong I picked C and got it correct. Hope this helped (sorry I'm late)