Final answer:
Innate immunity is characterized by a rapid response to pathogens and does not involve memory cells, specific responses, or vaccination, which are associated with adaptive immunity.
Step-by-step explanation:
The characteristic associated with innate immunity is C. Rapid response to pathogens. Innate immunity is the first line of defense in the immune system and responds quickly to a wide range of pathogens without prior exposure. Unlike adaptive immunity, which includes properties such as memory cells, specificity, and actions such as vaccination, innate immunity does not have memory and is not specific to particular pathogens. Its response is immediate and general. Adaptive immunity, on the other hand, develops over time and is characterized by its ability to remember specific pathogens and provide a stronger and more rapid response upon subsequent exposures.