Vaccination Against Measles Can Prevent the Disease in People Because

Vaccination against measles can prevent the disease in people because the vaccine

A) is effective against all types of viruses.
B) contains antibodies against the measles virus.
C) contains memory cells that produce antibodies when the person is exposed to the virus.
D) contains a weakened or inactive form of the virus, initiating a primary immune response.
E) prevents the virus from ever entering the body.