Answer:
C. 5
Explanation:
In the cladogram of the kingdom as illustrated, number 5 would represent the trait mammary glands. This trait distinguishes the class mammalia. Kangaroos, monkeys, and humans are all in this class. Kangaroos are in the order marsupialia, a different order than monkeys and humans. Monkeys and humans are placental animals and do not carry their young in pouches.