during the colonial era, south african society became divided based on\no caste.\no class.\no gender.\no race.

Answer:

D. race

Brief Explanations:

During the colonial era in South - Africa, racial divisions were prominent due to colonial policies and the system of apartheid that later developed. Caste is not a major dividing factor in South - African colonial society. Class and gender were also factors but race was the most significant and defining division.