Answer:
C
Step-by-step explanation:
Non-specific immune defense is what you were born with to fight any microbes off but a vaccine is given to you to help fight them off (so you weren't born with it)
Answer: A vaccine
Explanation: Non-specific immune defense is what you were born with to fight any microbes off but a vaccine is given to you to help fight them off (so you weren't born with it).
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