Which material do the uros people use to build their homes?
1) alluvial mud
2) volcanic rock
3) torora reed
4) pampas grass

Option: 3) Totora reed

Explanation:

The Uros people are the indigenous people of Bolivia and Peru. They are one of the famous people who built floating island our of totora reed to live in Lake Titicaca (near Puno) and Desaguadero River. In the early days, the floating island played a crucial part in defending themselves from enemies and predators. The Uros people take dried totora reeds to make balsas (reed boats) and islands for themselves to live with their family.  The islands are still made today, which can differ in sizes, a smaller or larger based on the member of the family.