You are presented with the question "What secrete antibodies?" and the following answer choices: 
- parasites
 - barnacles
 - the body's largest organ
 - major threat to health
 - activated b cells
 - resistance activities
 - fur seals
 - it keeps an organism warm

Now knowing that plasma cells are activated B cells that secrete antibodies and antibodies are produced by plasma cells, choose the best answer.


 

     activated b cells    