Question

an immune molecule that connects to a specific antigen, triggering the immune response is a(n)
lymphocyte.
antibody.
complement.
mast cell.

Explanation:

Antibodies are immune - globulin molecules that specifically bind to antigens, initiating an immune response. Lymphocytes are immune cells, complement is a set of proteins involved in the immune response in a different way, and mast cells are involved in allergic reactions and inflammation but are not the molecules that directly bind to specific antigens to trigger the immune response.

Answer:

B. antibody