Answer:
B. agglutination
Explanation:
Agglutination can be defined as the process through which antibodies link cells or particles together to form big clusters. In this process, antibodies attach themselves on specific target antigens on the cell surface or particle so that they stick together. This aggregation can boost the immune response because when the phagocytic acts on the pathogens, they will find them easy to identify. It is one of the most important processes in the immune protection and contributes to pathogen inactivation and their elimination from the body.
Therefore, the correct answer option is B.
