Which component of blood is responsible for the manufacture of antibodies?

Lymphocytes are a type of white blood cell that play a crucial role in the immune response. They are primarily responsible for the production of antibodies, which are specialized proteins that help the body identify and neutralize foreign pathogens such as bacteria and viruses. Among lymphocytes, there are specifically B cells that differentiate into plasma cells and secrete antibodies. This is a key function in adaptive immunity, allowing the body to recognize and remember specific antigens to provide long-lasting protection.

The other options represent different components of blood that serve distinct functions. Platelets are primarily involved in blood clotting, erythrocytes are responsible for oxygen transport due to their hemoglobin content, and neutrophils are a type of white blood cell that respond quickly to infection but do not produce antibodies. Thus, the correct answer highlights the critical role of lymphocytes in the immune system's defense mechanisms.