The three correct answers that provide evidence that South America, Africa, Antarctica, and Australia were once part of a supercontinent are:
- Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions.
- Cratons match across the edges of continents.
- Fossils of marsupials were originally the same across South America and Australia.
These pieces of evidence support the theory of continental drift and the existence of a supercontinent, such as Gondwana, which included these landmasses.