Fact 1: Monotremes are mammals that reproduce by laying eggs.

Fact 2: Examples of monotremes are the Platypus and Echidna.

Given the two facts above, answer the question "what reproduces by laying eggs?" with the following options: 
- h2o
 - chickens
 - mammals
 - bacteria
 - platypus
 - insects
 - humans
 - animals


 

     platypus    