Select the option that completes the sentence.The people built their civilization high in the Andes Mountains.

The option that best completes the sentence is "Inca."

The Inca civilization, which thrived from the early 15th century until the Spanish conquest in the 16th century, was known for its advanced agricultural techniques, impressive architectural achievements, and complex societal organization. They built their cities, including the famous Machu Picchu, high in the Andes Mountains, which provided natural fortification and helped them develop unique agricultural practices suited to mountainous terrain. The Incas utilized terrace farming and irrigation systems to maximize their agricultural output despite the challenges posed by high altitudes. Their civilization is recognized as one of the most significant and influential pre-Columbian cultures in South America.