Final answer:
IgG is the immunoglobulin associated with ADCC for parasites, enabling the killing of pathogens too large for phagocytosis by directing effector cells like NK cells to the pathogen.
Step-by-step explanation:
The immunoglobulin associated with antibody-dependent cell-mediated cytotoxicity (ADCC) for parasites is IgG. ADCC is a mechanism of the immune system that helps to eliminate pathogens that are too large to be phagocytosed. It involves the binding of the Fab region of an IgG antibody to a target parasite, and the Fc region of the antibody then binds to Fc receptors on effector cells such as natural killer (NK) cells, macrophages, and eosinophils. These effector cells then release cytotoxic substances that kill the pathogen.