The correct option is Paleomagnetic stripes on the ocean floor.
Explanation
Alfred Wegener proposed the Continental Drift Theory in 1912, suggesting that all continents were once united in a single supercontinent called Pangea. He supported this hypothesis using evidence from paleontology, geology, and climatology available at the time.Analysis of Options:
- Jig-Saw-Fit of continents Jig-Saw-Fit of continents (Cited): Wegener demonstrated the remarkable geometric fit between the opposing coastlines of the Atlantic Ocean, particularly between the bulge of Brazil (South America) and the Gulf of Guinea (Africa).
- Distribution of fossils Distribution of fossils (Cited): He cited the presence of identical fossils, such as the reptile Mesosaurus and the plant Glossopteris, on widely separated continents (South America, Africa, India, Antarctica, and Australia), arguing that these species could not have crossed the vast oceans existing today.
- Placer deposits Placer deposits (Cited): Wegener noted the occurrence of rich gold placer deposits on the Ghana coast (Africa) despite the absence of source rocks in the immediate vicinity. The source gold-bearing veins were located in Brazil, indicating the two regions were once contiguous.
- Paleomagnetic stripes on the ocean floor Paleomagnetic stripes on the ocean floor (NOT Cited): This phenomenon relates to Sea Floor Spreading and the modern theory of Plate Tectonics. The discovery of magnetic stripes (magnetic anomalies) on the ocean floor occurred in the 1960s, decades after Wegener's death. Wegener relied on paleoclimatic evidence (like tillites), not ocean-floor paleomagnetism.
Key Takeaway:
Wegener's evidence was derived strictly from continental observations (rock formations, fossils, climate, and coastline fit). Evidence related to the ocean floor (such as paleomagnetic stripes and mid-ocean ridges) was discovered later and forms the basis of Plate Tectonics.