Final answer:
The island's isolation and fertile soil helped the inhabitants preserve the old Inca way of life.
Step-by-step explanation:
The location of the island of Taquile in Peru helped the inhabitants to preserve the old Inca way of life mainly due to its isolation. Option a. The island's isolation made it difficult for outside influences to reach them. The Incas built enormous systems of terraces that provided irrigation and helped stop soil erosion. These terraces created micro-climates in which a range of different plants could be grown. The island's fertile soil allowed them to sustain traditional agriculture, which was a key aspect of the Inca way of life.