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

Fact 2: Echidnas are monotremes, or egg laying mammals.

Given the two facts above, answer the question "How does an echidna reproduce?" with the following options: 
- during the day
 - it can be seen
 - gastropod shells
 - Laying eggs
 - litter
 - aerobic capacity
 - mechanical
 - electrically


 

    Laying eggs     