Concept:Natural passive immunity is the temporary protection a newborn receives through antibodies passed from the mother, mainly via colostrum.
Explanation:A newborn animal's immune system is not fully developed at birth.
Colostrum is the first milk produced by the mother after delivery.
It is rich in antibodies, especially immunoglobulin G (
IgG).
When the newborn feeds on colostrum, these antibodies are absorbed directly into its bloodstream.
This provides immediate protection against diseases before the young animal can make its own antibodies.
This process is called natural passive immunity because the antibodies come naturally from the mother.
Vaccination provides artificial immunity, not natural immunity.
Antibiotics treat infections but do not confer immunity.
Sanitation helps prevent infection but does not give antibodies.
Answer:C. feeding with colostrum