You are presented with the question "What can prevent an allergic reaction?" and the following answer choices: 
- chemical messengers
 - prolactin release
 - with their fur
 - sweating
 - Breathing mask
 - deoxyribonucleic acid
 - Cooking
 - hormones

Now knowing that abreathing mask is used for keeping harmful particles from entering the respiratory system and allergies are a reaction of the immune system to harmful particles in the air, choose the best answer.


 

     Breathing mask    