The answer is C because many of the funcions that the family used to serve have been outsourced to other institutions
<span>Lactation is different between monotremes and therian mammals because monotremes are oviparous and have cloaca . Oviparous means they lay eggs, and generally animals that lay eggs do not nurse their young or lactate. Therian mammals give live birth, these are the animals that use breast milk to nurse their young.</span>
phospholipids, glycolipids, and sterols
