Which of the following best describes the biggest challenge Nelson Mandela faced as president of South Africa?

A. determining the appropriate role of religion in South African society
B. promoting economic development in order to modernize the South African economy
C. determining the appropriate role for South Africa in global politics
D. the need to heal the nation’s racial divisions resulting from decades the nation spent under apartheid

D. the need to heal the nation’s racial divisions resulting from decades the nation spent under apartheid