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 a supercontinent, likely Pangaea, in the geological past.