Fact 1: Immunity results from immunization.

Fact 2: Results can be damaging or disastrous.

Given the two facts above, answer the question "Lack of what can be damaging or disastrous?" with the following options: 
- force
 - violence
 - immunization
 - food and shelter
 - sensory neurons
 - kinetic energy
 - heat energy
 - beatings


 

   immunization      