Which Statement About Immunization Is Most Accurate

Which statement about immunization is most accurate?

A) Immunization is helpful in the spread of all communicable diseases.
B) Immunization cannot provide herd immunity.
C) Immunization is the process of introducing a form of a disease-causing organism into a person's system to promote the development of antibodies that will resist the disease.
D) Immunization is the process of administering antibodies to a person.