The correct answer is B) John D. Rockefeller.
The Standard Oil Company was founded by Rockefeller in 1870. He became one of the wealthiest men in America at this time. At one point, he controlled almost 90% of the oil made in the United States. He was considered a business tycoon during the Gilded Age and not only bought oil refineries but also bought the means of transportation for oil as well.
