Question

multiple choice question
of the three groups of mammals, which one carries the young in a pouch during development?
placentals
marsupials
monotremes

Explanation:

Marsupials give birth to relatively underdeveloped young. These young then crawl into a pouch on the mother's body where they continue to develop. Placentals have a more developed placenta and the young develop more fully inside the mother's womb before birth. Monotremes are egg - laying mammals.

Answer:

marsupials