Final answer:
IgG and IgM antibodies are involved in opsonization, with IgG playing a more prominent role due to its ability to efficiently bind to phagocytic cells. IgA is not primarily involved in this process.
Step-by-step explanation:
Among immunoglobulins (Igs), IgG and IgM are primarily involved in the process of opsonization. Opsonization is a crucial function of the immune system wherein pathogens are marked for destruction by phagocytic cells such as macrophages or neutrophils. The Fc portion of IgG antibodies binds to Fc receptors on phagocytic cells, facilitating the attachment and engulfment of the pathogen. IgM also contributes to opsonization, especially during the early stages of a primary immune response.
However, IgG is more often associated with this role due to its abundance during secondary immune responses and its ability to bind to phagocytic cells efficiently.
IgA, although a critical component in mucosal immunity, is not principally involved in opsonization. Instead, its primary functions include neutralization of pathogens at mucosal surfaces and prevention of their entry into the body.