Final answer:
The nurse might be administering vaccines to produce active immunity, which involves introducing antigens to stimulate the production of antibodies by B lymphocytes.
Step-by-step explanation:
The nurse might be administering vaccines in order to produce active immunity. Vaccines introduce antigens specific to a pathogen into the person's blood, which then leads to the production of antibodies by B lymphocytes. This active immune response provides protection against future infections. The nurse is most likely administering vaccines, which produce active immunity. Vaccines work by introducing antigens specific to a pathogen into a person's blood. This triggers the immune system to produce antibodies, which is the body's active response to fight off potential infections. The production of antibodies by B lymphocytes upon exposure to antigens is what constitutes active immunity, distinguishing it from passive immunity, where antibodies are received from an external source. For example, in the case of a dog bite with confirmed rabies, the administration of antibodies specific to the rabies virus represents passive immunity. However, vaccines aim to stimulate the body's own immune response to create active immunity, identified as Artificially acquired active immunity (Option A from the multiple-choice segment).