Answer :
Answer: Option D.
Passive artificial immunity.
Explanation:
Passive artificial immunity refers to the injection of artificially produced antibodies to a person in order to immunize or boost his immunity. It is normally produced from another cells or animals and injected to the person I need of it. Example include gamma globulin.
Antibodies for rattle snake is passive artificial immunity because it is injected into the person, it is not produced by the person rather it is gotten from another individual.