You are presented with the question "The female platypus and echindna does not have a vagina and?" and the following answer choices: 
- Uterus
 - expelled
 - organ
 - abrasion
 - alveoli
 - reproduce
 - state
 - Epidermis

Now knowing that female monotremes lack a uterus and vagina and examples of monotremes are the Platypus and Echidna, choose the best answer.


 

 Uterus        