Fact 1: Disease has a negative impact on an organism.

Fact 2: Peace is freedom from sickness and disease.

Given the two facts above, answer the question "What has a negative impact on an organism?" with the following options: 
- influenza
 - sickness
 - smallpox
 - leukemia
 - liver cancer
 - food
 - air
 - water


 

  sickness       