You are presented with the question "what reproduces by laying eggs?" and the following answer choices: 
- h2o
 - chickens
 - mammals
 - bacteria
 - platypus
 - insects
 - humans
 - animals

Now knowing that monotremes are mammals that reproduce by laying eggs and examples of monotremes are the Platypus and Echidna, choose the best answer.


 

     platypus    