Answer:
Alfred Wegener first presented his hypothesis to the German Geological Society on 6 January 1912. His hypothesis was that the continents had once formed a single landmass, called Pangaea, before breaking apart and drifting to their present locations.Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of "continental drift." Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines look like they fit together like a puzzle.
Explanation:
The correct answer is D. 'oppressed.'
This term refers to the lowest caste in India, to those who are practically untouchable. Today, this term is considered to be unconstitutional in India, where they prefer the term Scheduled Castes to refer to this social stratum.
