The strategy that does not represent one of Rockefeller's management techniques is social Darwinism. He utilized horizontal and vertical integration, as well as the holding company model, but social Darwinism was a societal philosophy rather than a strategy he used.
The question deals with the management strategies used by John D. Rockefeller to build his business empire. Among the options provided, the strategy that does not represent one of John D. Rockefeller's management techniques is C. social Darwinism. Rockefeller is famous for implementing strategies such as horizontal integration, in which he bought out competitors to monopolize a market, and vertical integration, where he controlled the entire supply chain from production to sale. He also utilized the holding company model to manage his complex business operations. Social Darwinism was a societal philosophy that was not a direct business management strategy employed by Rockefeller.