You are presented with the question "Active immunity results when an immune response to a pathogen produces the basis of what?" and the following answer choices: 
- immunological memory
 - failed memories
 - resistance
 - broken memory
 - major threat to health
 - resistance activities
 - Leptospirosis
 - sad memories

Now knowing that active immunity results when an immune response to a pathogen produces memory cells and memory cells are the basis of immunological memory, choose the best answer.


 

 immunological memory        