Answer:
The correct option is d. confer passive immunity.
Explanation:
An antitoxin is an antibody formed in an organism in response to the presence of a bacterial toxin inside, which it can neutralize. We speak of passive immunity, when it is obtained by the passage of antibodies (antitoxins) to the individual in a natural or artificial way, having as main feature that it is short-lived, since they remains only until the transferred antibodies or lymphocytes disappear.
