You are presented with the question "What can be used for keeping aerosols from entering the respiratory system?" and the following answer choices: 
- goggles
 - hydration
 - sweating
 - hydrogen and oxygen
 - breathing masks
 - lab coats
 - layers of fat
 - gloves

Now knowing that abreathing mask is used for keeping harmful particles from entering the respiratory system and aerosols are tiny particles suspended in the air, choose the best answer.


 

     breathing masks    