Concept:The Mfecane was a period of intense warfare in Southern Africa, and the Zulu nation had a specific king as its head at that time.
Explanation:The Mfecane involved several powerful African states during the early 19th century.
The Ndwandwe were led by Zwide.
The Mthethwa were led by Dingiswayo.
The Ngwane were led by Sobhuza.
However, the head of the Zulu people was Shaka.
Shaka rose to power after the death of Dingiswayo and transformed the Zulu into a dominant military kingdom.
His military reforms and conquests were central to the events of the Mfecane.
The other leaders mentioned ruled different states, not the Zulu.
Therefore, the correct head of the Zulus at the time of the Mfecane was Shaka.
Answer:Shaka (Option B).