A student is researching the fossilized remains of a plant species that existed millions of years ago. Fossils of this particular plant have been discovered in both Australia and Antarctica. What is the BEST explanation for why fossils of this plant are present on these two continents?(1 point)
Australia and Antarctica were once part of the same continent
The plant's seeds were spread over the large the ocean from Australia to Antarctica.
The plant randomly existed in both places.
When Earth began, Australia and Antarctica were the only two continents.