Answer:
a) a "lost" city made of gold.
Step-by-step explanation:
The legend of El Dorado is a myth that was created by the Spanish Empire and conquistadores in the early years of the exploration of the Americas. El Dorado was meant to be a city made completely of gold, with extremely wealthy people and exotic riches. Many expeditions were organized to try to find this city in the areas that are now Colombia, Venezuela, Guyana and Brazil. Although eventually the city was dismissed as a myth, the expeditions allowed the explorers to map a large region of South America.