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