Question

How did the Spanish address de las Casas's criticisms of their brutal treatment of Native American groups?

Queen Isabella required the Conquistadors to read to Native populations a statement, warning them that if they did not comply, they would be punished severely. The statement had little effect because it was read to the Native people in Spanish, a language they did not know.
Queen Isabella required the Conquistadors to adhere to a strict code of standards, similar to chivalry. This code resulted in much more peaceful interactions

Answer 1

Spanish addressed de las Casas's criticisms of their brutal treatment of Native American groups because Queen Isabella required the Conquistadors to adhere to a strict code of standards, similar to chivalry

Answer 2

The best option from the list would be that "Queen Isabella required the Conquistadors to adhere to a strict code of standards, similar to chivalry," although very few of the conquistadors followed this rule.