Vaccine against poliovirus is an example of

The correct option is C

Active immunization

The correct option is C:

Explanation of correct option:

1. After being exposed to an antigen, immunity is induced through active immunization.
2. The recipient produces antibodies, which can be permanently retained.
3. The development of antibodies against the antigen is the goal of vaccination.
4. Vaccination involves injecting a dead or weakened microorganism into an entity, which allows an antigen to enter the organism.
5. After that, the antigen is recognized, and the antibody is produced.
6. It is active immunization since the body produces it on its own.

Explanation of incorrect option:

Option A:

1. When your body's natural defense system can't detect the difference between your own cells and foreign cells, it attacks normal cells, creating autoimmune diseases.

Option B:

1. A person receives antibodies or lymphocytes produced by another person's immune system in passive immunization; in active immunization, the individual's own immune system is stimulated to make antibodies and lymphocytes.

Option D:

1. Immunization, often known as vaccination, is the process of strengthening an individual's immune system against an infectious pathogen (known as the immunogen).

Final answer: It's an example of active immunization in action.