Explanation:

- Protein:

- Proteins are large molecules composed of amino acids.

- They play various roles in the body, such as building tissues and acting as enzymes.

- Proteins don't generally trigger the immune system to produce antibodies unless they are part of an allergen.

- Glucose:

- Glucose is a simple sugar and a primary source of energy.

- It does not induce antibody production.

- It's crucial for metabolic processes but not involved in immune response.

- Platelet:

- Platelets are small blood cells that help in clotting to stop bleeding.

- They can become involved in immune responses indirectly but are not known for directly causing antibody production.

- Antigen:

- An antigen is any substance that causes the immune system to produce antibodies.

- It can be a virus, bacteria, or any foreign molecule that triggers an immune response.