B- Popular opinion turned against South African apartheid.
Explanation:
American public opinion and Congress started to feel increasingly angry about the apartheid regime. In the early 1980s, there were more and more calls for sanctions against Pretoria. This forced the US Ronald Reagan administration to make a policy shift. Pressure was added after Nobel Peace Prize winner, South African archbishop Desmond Tutu went to the United States and publicly called US policy "immoral."
It reduced corruption because it established that government positions would be granted based on merit, and not on political affiliation. It was successful because parties had to become successful at businesses to earn funding.
