You are presented with the question "what lays their eggs in a burrow?" and the following answer choices: 
- mammals
 - alpacas
 - loose soil
 - animals
 - monotremes
 - honeybees
 - insects
 - ducks

Now knowing that platypus females lay their eggs in a burrow and examples of monotremes are the Platypus and Echidna, choose the best answer.


 

     monotremes    