Final answer:
The property not resulting from the action of B and T cells is E) self-tolerance; this is about the immune system not attacking the body's own cells.
Step-by-step explanation:
The property of the immune system that is NOT a result from the action of B and T cells is E) self-tolerance. The immune system has several important properties including redundancy, specificity, diversity, and memory. Redundancy ensures that if one component fails, others can take over its function. Specificity allows the immune response to target specific pathogens.
Diversity means that the immune system can respond to a vast array of different pathogens, and memory allows for a faster and more effective response to pathogens that the body has previously encountered. Self-tolerance is more about preventing the immune system from attacking the body's own cells rather than an ability conferred by B and T cells.