Answer:
(b)marsupial
Step-by-step explanation:
Kangaroos are marsupials and they are basically found in Australia and some parts of America . Marsupials are a kind of mammals and mammals are considered as the most advanced vertebrates which have many distinct mechanisms to protect their body from extreme weather. Mammals have got sweat glands to withstand extreme hot weather. They have got mechanism like shivering to protect their bodies in extreme cold weather. Mammals have teeth and they breast feed their babies.
Mammals are categorized into 3 types:
1) Prototherians - These are primitive mammals like Duck bill platypus.
2) Metatherians - These include marsupials like Kangaroos.
3) Eutherians - These are placentals (animals which develop placenta during pregnancy) and include humans.
Kangaroos have pouch in their body in which they carry their young ones. Marsupials like Kangaroos have short gestation period as compared to placentals.