Concept:The key marker of apartheid's official end is a political event that unlocked the transition to democratic rule.
Explanation:The release of Nelson Mandela from prison in
1990 is recognised as the event that marked the official end of apartheid in South Africa.
His release opened the way for talks between the apartheid government and anti-apartheid leaders.
Those negotiations led to the repeal of apartheid laws and the move toward majority rule.
The Freedom Charter, the Sharpeville Massacre, and the Truth and Reconciliation Commission cannot accurately be described as the official end of apartheid.
Answer:A. The release of Nelson Mandela from prison