You are presented with the question "What do cancer cells produce?" and the following answer choices: 
- heat energy
 - direct energy
 - Energy
 - massive damage
 - rays or beams
 - antibodies
 - Energy.
 - Chemical energy

Now knowing that antigens are found on cancer cells and the cells of transplanted organs and antibody production is triggered by antigens, choose the best answer.


 

      antibodies   