PLEASE ANSWER ASAP FOR BRAINBLEST!!!!!!!!!!!!!!!!
Your defense system attacks...unfamiliar organisms invaders that can cause disease/illness
A. immune system
B. Thymus
C. Bone marrow
D.B and T cells
E. Secondary lymphatic tissues

Respuesta :

Answer:

i think its A... im not 100% sure tho so let me know if im wrong :)

Explanation:

edge 2020