How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another?

Question

Animals evolved separately on each continent.
Land bridges existed between the continents.
Animals swam across the ocean to new continents.
Continents were once one landmass and have drifted apart.

Answer 1

Wegener explained the presence of fossils of land animals on continents that are now separated by oceans by proposing that continents were once part of a single landmass, which he called Pangaea. This supercontinent began to break apart, causing the continents to drift to their current positions. Wegener's theory suggests that at some point in time, the land animals were able to inhabit a continuous land area, and as the continents moved apart, the animals became isolated from one another, leading to the distribution of similar fossils on different continents. Therefore, the correct answer is:

Continents were once one landmass and have drifted apart.