The correct answer to this open question is the following.
Although the question does not include options, we can answer the following.
What a historian might conclude that the meeting that produced the Freedom Charter was held in secret is "The charter’s call for the end of apartheid would have been threatening to the South African government."
We are talking about the Freedom Charter that was a key document created by the Congress Alliance of South Africa. During that horrible racist and oppressive years against black people, the claim from the charter was only one: people have to rue.
The charter was the product of the opinions of thousands of black South Africans that expressed their desire for freedom, respect for their civil rights, labor rights, and the respect for their property So these ideas were condensed in the freedom chart.
