The Inca used quipu for:

• A. A system of writing using glyphs.
• B. A device used for weather forecasting.
• C. Records and data management using knotted cords.
• D. A calendar system.

Answer: (C)

Quipu served as a practical system for keeping track of information across the vast Inca Empire. Since the Incas didn’t develop a traditional written alphabet or script, they relied on knotted cords to manage data. Different knots, colors, and cord arrangements encoded numbers and categories, allowing administrators to track inventories, tribute, labor obligations, populations, and other resources. Trained specialists read and maintained these records, making quipu central to governance and logistics.

So, while the idea of glyph writing, weather forecasting devices, or a calendar exists in other cultures, the Inca use of quipu was fundamentally about recording and managing data through knotted cords.