"The diverse population of this city is divided into several distinct ranks and classes of people, defined by their blood and parentage. At the peak of this social pyramid are the Spaniards born in Spain, who occupy the highest offices of church and state. Beneath them are the Creoles, born in the New World of Spanish blood, who possess great wealth but are excluded from supreme authority. Lower still are the Mestizos, born of Spanish and Indian parents, and the Mulattoes, born of Spanish and African parents. At the base are the Indians and African slaves, who perform the heaviest labors."
— Adapted from Thomas Gage, *A New Survey of the West Indies*, 1648
Based on the passage, which of the following was the primary basis for determining an individual's position in the Spanish colonial caste (casta) system?
- AThe size of land grants awarded under the encomienda system
- Racial ancestry and parentageAnswer
- CThe type of crops introduced through the Columbian Exchange
- DThe level of cultural homogeneity among native populations