You are presented with the question "Living things can be protected by" and the following answer choices: 
- foolish behavior
 - exoskeleton
 - shells
 - Quasars
 - coral reefs
 - malnutrition
 - layers of fat
 - pesticides

Now knowing that insect bites cause harm to living things and pesticides kill insects and disease pathogens, choose the best answer.


 

        pesticides 