Concept: The first African female President of the United Nations General Assembly was a Liberian diplomat and jurist.
Explanation: Angie Brooks was elected President of the United Nations General Assembly in 1969.
She served in this capacity during the 24th session of the UN General Assembly from 1969 to 1970.
She was a distinguished legal expert from Liberia, representing Africa at the highest level of the UN forum.
The option Elizabeth Rhoda is not a historical holder of this office.
Queen Nziga also did not hold this position in UN history.
Sirleaf Johnson was President of Liberia, but she never served as UN General Assembly President.
Therefore, Angie Brooks remains the first and only African woman to have led the UN General Assembly so far.
Answer: B. Angie Brooks