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3 votes
I neeed please ASAP

I neeed please ASAP-example-1
User Josette
by
7.6k points

2 Answers

7 votes

Answer:

Option C

Step-by-step explanation:

A vaccine is usually given to boost up the immune system by making them familiar with the virus

User Marc Lincoln
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6.7k points
6 votes

Answer:

option C

The immune system has been exposed to the polio virus so that the body responds rapidly to infections

User Aleksey Cherenkov
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6.4k points