South America is home to many unique physical land-formations and features. Titicaca is the___

A) world's highest navigable lake.

B) lost city of the Incas.

C) highest waterfall in the world.

D) largest rain forest in the world.

The correct answer is A) the world's highest navigable lake.

South America is home to many unique physical land-formations and features. Titicaca is the world's highest navigable lake.

This impressive lake is located on the border of two countries: Bolivia and Peru, in South America. It is also considered to be the largest lake in South America. The strait of Tiquinia connects the two subbasins that form the lake. This lake serves an important function to the people of the region and the environment. It also played an important role in the mythology of Native Southamerican Indians in prehispanic years.

Answer:b