<span>When examining how Rockefeller became successful, notice that he owned absolutely everything regarding the production and transportation. This means that the answer is C) Combined vertical and horizontal integration. He became a monopoly owner meaning he owned everything regarding the production of oil and didn't rely on anyone.</span><span />
A.consulting the network's mission statement <span>B.comparing its programming to programs run by other networks </span> <span>C.determining its bias </span> <span>D.analyzing who watches it