Question

which source of evidence did wegener use to support his theory of continental drift?
fossils found on earth
magnetic fields of earth
satellite mapping of the tropical islands
glaciers found near the poles

Explanation:

Wegener used fossil evidence. Similar fossil species found on different continents suggested those continents were once connected. For example, the presence of the same ancient plant and animal fossils on South America and Africa supported continental drift. Magnetic fields of Earth were more relevant to later plate - tectonic evidence (like seafloor spreading and magnetic striping). Satellite mapping of tropical islands was not available in Wegener's time. Glaciers near poles (like glacial striations in areas that are now tropical) were part of his evidence too, but fossils were a key source.

Answer:

fossils found on Earth