Question

immunizations expose people to which substances?
a t cells
b dead or inactivated antigens
c b cells
d antibodies from another organism

Explanation:

Immunizations work by exposing the body to dead or inactivated antigens. These antigens stimulate the immune - system to produce antibodies and memory cells without causing the full - blown disease. T cells and B cells are part of the body's immune response but are not what immunizations directly expose people to. Antibodies from another organism are used in passive immunity, not in typical immunizations.

Answer:

B. Dead or inactivated antigens