Fact 1: Platypus females lay their eggs in a burrow.

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

Given the two facts above, answer the question "what lays their eggs in a burrow?" with the following options: 
- mammals
 - alpacas
 - loose soil
 - animals
 - monotremes
 - honeybees
 - insects
 - ducks


 

     monotremes    