Artificially acquired active immunity is achieved by

• A. Vaccination
• B. Antibodies from mother to fetus
• C. Vaccination and your body makes antibodies
• D. Injecting antibiotics

Answer: (C)

Artificially acquired active immunity happens when a vaccine stimulates your own immune system to make antibodies and memory cells. The vaccine introduces antigen in a safe form, teaching B cells to produce specific antibodies and helping T cells coordinate the response. This active process by your body creates long-lasting protection, because memory cells respond rapidly if you encounter the real pathogen later.

Antibodies from mother to fetus are an example of passive immunity, where protection comes from transferred antibodies rather than your own immune response. Injecting antibiotics isn’t immunity at all—it’s a treatment that targets the pathogen, not a way to create lasting immune memory. So the best description of artificially acquired active immunity is the vaccine prompting your body to generate its own antibodies.