Final answer:
Lake Titicaca covers more than 1900 square miles in the Peruvian part and is known for its high elevation and solar energy collection.
Step-by-step explanation:
The correct answer in this case is Lake Titicaca. Located in the Altiplano Region of the Central Andes on the border between Peru and Bolivia, Lake Titicaca covers more than 1900 square miles in the Peruvian part. It is a large freshwater lake about 120 miles long and 50 miles wide. The lake is known for its high elevation of about 12,000 feet above sea level and its role as a solar energy collector, which helps maintain a moderate temperature for agriculture.