You are presented with the question "Scraping oneself on a contaminated object may cause an invasion of the body by what?" and the following answer choices: 
- amoebae
 - bacteria
 - blood
 - dogs
 - disease
 - horses
 - toxins
 - fish

Now knowing that scraping oneself on a contaminated object may cause infection and an infection is an invasion of the body by bacteria, choose the best answer.


 

  bacteria       