You are presented with the question "What prevents insects from being killed?" and the following answer choices: 
- Fly swatter
 - Active immunity
 - Exfoliation
 - a cuticle
 - food
 - bugs
 - rays or beams
 - resistance

Now knowing that active immunity results when an immune response to a pathogen produces memory cells and pathogens are simply a variety of diseases which kill insects, choose the best answer.


 

  Active immunity       