In the spanish colonial caste system peninsular were

a). latin americans colonist born in spain
b). descendants of the indigenous peoples of the americas
c). people of spanish descent born in the new world
d). people of african descent brought to the new world by way of the atlantic slave trade

In the Spanish colonial caste system peninsular were Latin American colonists born in Spain.

Option A

Explanation:  

The Peninsular is any of the Latin American colonist who took birth in Spain. The "special favour" of the Spanish crown were also enjoyed by them and they were appointed as the leading civil posts under the "colonial regime". Although, they were referred as second class, they enjoyed many privileges like the native Spanish people. They also were more privileged than blacks, Indians, and mixed blood people too. They were also given more preference in commerce and trade. And, after achieving the independence from Spain, the peninsular were mostly driven out.

cuba is a multi-ethnic nation