Answer :
It would be #2 because it dosent have those specific antigens to defend the pathogen.
Allergic reactions are the response to the antigen-antibody interaction, a consequence of an immune response to a substance, that is, a response to specific antigens.
What are allergic reactions?
They consist of the perception of our body as harmful of a substance that is not (allergen).
This contact triggers an exaggerated immune response that manifests itself in various organs of the body, that is, specific immune responses, with clinical expression.
Therefore, we can conclude that allergic reactions are the response to specific antigens that can be considered as a defense mechanism but when it becomes inappropriate it causes the typical manifestations of allergy.
Learn more about allergic reactions here: https://brainly.com/question/23740