Choose your answer from:
(i). Conifers;
(ii). rats;
(iii). humans;
(iv). mammals;
(v). echidnas;
(vi). kalenchoes;
(vii). alpacas;
(viii). barnacles;

Fact 1: Female monotremes lack a uterus and vagina. Fact 2: Examples of monotremes are the Platypus and Echidna. Given the two facts above, what lacks a uterus and vagina?
Answer:
(v).