The anwser c should be correct
One common social structure among ethnic groups in sub-Saharan Africa is segmentary lineage organisation. Segmentary lineage societies are characterised by the foremost importance of kin relationships in determining individuals' social and political allegiances, as well as their patterns of residence.
I’m not sure what “the two crown” is, but if you mean the double crown, it’s what pharaohs of the first dynasty would wear.
The Double Crown symbolizes the joining of Lower and Upper Egypt, and the pharaoh’s control over both lands.
I’m not sure if this is the answer you were looking for, but if you have another question abt it lmk :)
