Q: What species of female mammal lacks a uterus and vagina?\nOptions:\n- (A) fallopian tubes\n- (B) echidna\n- (C) live birth\n- (D) lays eggs\n- (E) cows\n- (F) tortoises\n- (G) alpacas\n- (H) goats
Let's think step by step below.

User
Female monotremes lack a uterus and vagina. Examples of monotremes are the Platypus and Echidna. Platypus and echidna lack a uterus and vagina.
Thus, the answer is (B).
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