not fair at all but this is an opinionated question u literelly shouldnt be able to get it wrong
The correct answer is c.: it served as the be boundary between North Korea and South Korea. The current line is in a similar place, but it's not a straight line, unlike the line running along the 39th parallel.
If this is sociology, then the answer is that in any crowd, anywhere in the world, people have many different motivations.
Hope this helps, GOD BLESS! :-)
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