Answer:
B (please give brainliest)
Explanation:
I have a book about this, I LOVE immunology. But to the actual question.
Passive: Not B, T, or Dendritic cells.
Not Passive: Anything Else.
A: This is not passive. It is using B cells to create antibodies.
B: This is Passive. It is using Cells created by the mother/child (not B cell.)
C: This is not passive. Once again, using antibodies.
D: This is not passive. Vaccinations use antibodies to lessen future attacks.
I hope that this helps!