Monotremes are mammals that reproduce by laying eggs.
Examples of monotremes are the platypus and echidna.
Echidnas reproduce by laying eggs.
Echidnas reproduce how?
Options:
  * asexually
  * by indirect light
  * spread flower seeds
  * during the day
  * by birthing live young
  * by laying eggs
  * by budding
  * with their fur