Answer:
C) Terrible diseases, once eradicated, could resurface.
Step-by-step explanation:
According to the article, the narrator believes that if more parents refuse to vaccinate their children, then there could be an increase in terrible diseases that were previously eradicated.
He wonders, "As the number of unvaccinated children in my practice increases, I wonder if I am creating a risky environment for vaccine-preventable infections in my community"