Which of these is a weakened or dead form of a pathogen that causes an immune response? a antibody b vaccine c antigen d inflammation

Vaccine

Explanation:

The weakened or dead form of pathogens that evoke immune response in the body of an organism is known as vaccine. They are used to generate the immune response against pathogens.

It contains an agent that typically resembles the disease causing microorganism, it is often made weekend or used in killed form of the pathogen that generates the same immune response as like of real disease causing microorganism.

The defense mechanism of body is prepared prior to the original exposure to disease causing microorganism.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.