The immune system's job is to... A
identify germs and eliminate them itself.
B
recognize germs and send antibodies to fight them.
C С
constantly send out antibodies to find and destroy
germs.
D
create weakened germs so antibodies can learn to
recognize them

Explanation:

I think it is b

one thousand and one nights, also known as arabian nights is a collection of stories whose basic structure is that of embedded narrative. this technique refers to a main story which works as the common frame - or framing narrative - for the other stories, and then this series of stories which are connected to the main one. this technique can also be referred to as a story within a story. the stories stem from the original tale, some begin and end on their own, some are connected to the previous or following one, by means of questions that are answered in the subsequent tale, or characters which reappear.