The correct answer is b) a change from a mainly agricultural to a mainly industrialized economy. This was because the leader of the Communist Party of China, who was Mao Zedong, led the Great Leap Forward as a economic and social campaign by trying to transform the agrarian country of China to an industrialized country, so that it could become socialist and not solely focus on an agrarian economy. However, this was a huge disaster and resulted in millions of deaths and forced labor and terror were commonly used.