I think the correct answer is c
Hope this helps:)
Another crucial development was the use of a steel frame instead of stone or brick, otherwise the walls on the lower floors on a tall building would be too thick to be practical. ... Further developments led to the world's first skyscraper<span>, the ten-story Home Insurance Building in Chicago, </span>built<span> in 1884–1885.</span>
I think it's because the language Shakespeare used was old English. Modern English is very different to the way it was spoken in Shakespeare's time.