Active natural immunity occurs when

A) antibodies pass from a pregnant mother to her fetus.
B) antibodies are injected into a host.
C) an individual develops a disease.
D) a person is vaccinated.
E) antibodies are passed in breast milk.

Active Natural Immunity

Immunity that develops after exposure to a disease-causing organism, leading to the production of antibodies and immunological memory.

Developing Disease

The process by which a disease begins to form or increase in severity, involving the progression from initial symptoms to more severe conditions.

Vaccinated

Being vaccinated refers to having received a vaccine, which is a substance that stimulates the body's immune response against diseases.