Choose the one which is an example of artificial active immunity:

Explanation

Artificial active immunity involves the introduction of a vaccine (e.g., MMR shots) containing weakened or inactivated pathogens or their components, stimulating the immune system to produce its own antibodies and memory cells for long-term immunity.Why not the others?Prevention of a disease due to previous infection: This is natural active immunity, as it results from the body producing antibodies after recovering from an infection.Mother receiving antibodies: This refers to artificial passive immunity, such as receiving preformed antibodies via injections like immunoglobulins.Fetus receiving antibodies through the placenta: This is natural passive immunity, as antibodies (IgG) are transferred naturally from the mother to the fetus.