Which of the following statements is true regarding antibodies?

Antibodies are indeed specific to particular antigens, which is a fundamental characteristic of their function in the immune system. Each antibody is designed to recognize a specific antigen, typically a foreign substance like a virus or bacterium, due to its unique structure. This specificity is crucial for the immune response, as it enables the immune system to target and neutralize invading pathogens effectively.

The ability of antibodies to bind to particular antigens is the foundation of their role in immunity, including the activation of other immune responses such as phagocytosis and the complement system. This specificity also underlies the basis for immunological memory, where exposure to an antigen leads to the production of memory B cells that can produce antibodies more rapidly upon subsequent exposures.

The other statements, while they touch on different aspects of immune function, do not accurately reflect the complete picture regarding antibodies in relation to specificity and immune response.