The correct answer is A) It made steel production faster and cheaper.
The Bessemer process changed steelmaking in the United States in that it made steel production faster and cheaper.
Before the development of the open-hearth furnace, the Bessemer process represented an inexpensive process for mass production of steel. Eglish inventor Henry Bessemer developed the process and registered the patent in 1856. So it is correct to say that this process changed steelmaking in the United States in that it made steel production faster and cheaper.
