Alfred Wegener discovered the origin of the continents and the oceans. The mountain ranges were formed because of the collision between the continents. Thus, option D is correct.
Alfred Wegener was a climatologist and a geophysicist who discovered drifting to be the cause of the ocean and mountain formation. This finding helped in the theory of the Continental Drift.
The Continental Drift theory he gave was based on the plate tectonic theory. It stated that the continental plates drifted due to the tectonic plate movements, and the collision caused the foldings of the earth layer to form a mountain.
The Himalayas were formed due to the drifting of the plates of India with the other plates of the Asian continents causing the drifting and folding that gave rise to the mountain.
Therefore, the continents colliding gave rise to mountains.
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