You are presented with the quiz "The mature form of what kind of cell secretes antibodies?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plasma cells are activated B cells that secrete antibodies" and "plasma Cells Plasma Cells Plasma cells are the mature form of B-lymphocytes". 

So, what's the best answer to the question?


 

       B-lymphocytes    