Final answer:
Immune globulin is a true concentration of antibodies from donated blood and it plays a critical role in humoral immunity as it contributes to the destruction of pathogens.
Step-by-step explanation:
Immune globulin is indeed a concentrated solution of antibodies derived from pooled donated blood. Therefore, the correct answer is A. True. Antibodies, also known as immunoglobulins (Ig), are glycoproteins that serve as the functional basis of humoral immunity.
They are produced by plasma cells and occur in blood, bodily secretions, and breast milk. Antibodies can bind pathogens and mark them for destruction by phagocytes, which helps to protect against disease or treat active disease. The main types of immunoglobulins include IgG, IgA, IgM, IgD, and IgE, with IgG being the most abundant in the blood and playing a significant role in fighting against diseases.