Existence of marsupials in Australia and New Zealand proves
Due to Continental drift, this separation Africa isolated and floated northwards and Australia and Antarctica stayed joined to each other and were connected either by a method for a land connector a chain of islands, toward the southern tip of South America. Now, it appears, the pouched creatures (marsupials) were created from the early warm-blooded creature stock. On the off chance that these improvements occurred in South America, as some proof proposes, the early marsupials could have spread crosswise over into the Australian Antarctic square by a method for these land-spans.
So, the correct option is 'Continental drift'.