Female monotremes lack a uterus and vagina.
Babies are normally delivered from the uterus through the vagina.
Female monotremes lack ability to deliver babies normally.
Female monotremes lack ability to what?
Options:
  - allow growth
  - mate with females
  - lay eggs
  - produce offspring
  - deliver babies normally
  - swim in water
  - nest in burrows
  - decrease stamina