The correct answer is (c) it creates immunity in the body.
Explanation:
Vaccination works by introducing a weakened or dead form of a virus (like polio) into the body, which triggers the immune system to produce antibodies against that virus. This means that if the body encounters the live polio virus later, it will be able to fight it off and prevent infection.
Why other options are incorrect:
(a) Vaccination kills the polio causing microorganisms:
While the vaccine does introduce a weakened or dead virus, it doesn’t directly kill the polio virus in the body. Instead, it stimulates the immune system to respond.
(b) prevents the entry of polio causing organism:
Vaccination doesn’t physically block the polio virus from entering the body. It prevents the virus from causing disease by creating immunity.
(d) all the above:
Option (d) is incorrect because only option (c) accurately describes the primary function of vaccination against polio. Vaccination does not directly kill the polio virus or prevent its entry, but it does create immunity in the body.