Alfred Wegener cited several pieces of evidence to support his hypothesis of continental drift, including:
- The continents fit together like a puzzle.
- Similar fossils have been found on different continents, suggesting they were once connected.
The other options mentioned, such as the contraction of the Earth and new oceanic crust formation, were not part of Wegener's original arguments for continental drift. Instead, he focused on geological, fossil, and climatic evidence to support his theory.