Answer:
immune system
Explanation:
The adaptive immune system reacts specifically to pathogens (germs). It is able to recognize attacking pathogens and fights against certain antigens or foreign substances. The next time a known antigen is encountered, the adaptive immune system can respond faster.
I think the answer would be C
Sorry if I am wrong
<h2>dont know what your asking?</h2><h2></h2><h2></h2><h2></h2>