inherited from the parent
acquired through the first exposure to the disease
achieved directly through readymade antibodies
achieved through vaccination
The correct option is C achieved directly through readymade antibodies
Passive immunity can occur naturally, when maternal antibodies are transferred to the foetus through the placenta, and can also be induced artificially, when high levels of human (or horse) antibodies specific for a pathogen or toxin are transferred to non-immune individuals.
Innate immunity is the one that is inherted or based on genetic predisposition.
Acquired or adaptive immunity is the body's third line of defense. Active immunity results from an infection or an immunization.