Active immunity is not acquired by ?

Ans. is 'c' i.e., Immunoglobulin transfer Acquired immunity is of two types :? 1) Active immunity . It is so called because host's immune system actively produce immunity. . Antigenic stimulus induces the immune system to produce antibodies or cellular immune response. 2) Passive immunity . It is so called because antibodies are produced in another organism and then received passively by the host.