What does the term immunity refer to?

The term immunity refers specifically to the body's ability to resist and destroy infections, which encompasses a complex network of cells and biological processes. This system is essential for recognizing and responding to pathogens, such as bacteria and viruses, and involves components like white blood cells, antibodies, and the lymphatic system.

The immune system can differentiate between harmful invaders and the body's own cells, enabling it to mount a targeted defense against infections. This capability protects the body from diseases and supports overall health. Without immunity, infections could easily proliferate, leading to illness and potentially life-threatening conditions.

While other options present relevant physiological responses, they do not accurately capture the comprehensive definition of immunity as the ability to fight off infections specifically.