Question

which piece of evidence did Alfread Wegner's original theory of continental drift have access to A mountains in north american appearing to match up with mountains in northern European, B seafloor spreading at mid-ocean ridges, C reversing paleomagnetism in rocks on the ocean floor, D a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains

Answer 1

Alfred Wegener's original theory of continental drift primarily had access to evidence in option A: mountains in North America appearing to match up with mountains in northern Europe.

Wegener noted the similarity in the geology and fossil records of continents that are now widely separated by oceans, indicating they may have once been joined. His observations regarding the alignment of mountain ranges and rock formations across continents were key components of his proposal in 1912. Options B, C, and D refer to evidence related to plate tectonics and seafloor spreading, which were developed later and helped to support and expand upon Wegener's original ideas.