Answer :
Final answer:
The most useful Inca advancement for a farmer on a steep mountain would be terracing, as it allows for agricultural cultivation on difficult terrain. Terraces maximize arable land, reduce erosion, and help retain water, thus improving crop yields. Other options such as trephination, a quipu, and a chaski are not relevant to enhancing agricultural productivity.
Explanation:
Inca Agricultural Advancements
The farmer living on the edge of a steep mountain could benefit most from the Inca advancement known as terracing. This technique involves creating flat plots of land on the slopes of hills and mountains, which allows for more effective cultivation of crops in steep areas. The Incas mastered this method, enabling them to grow a variety of crops such as potatoes and corn despite the challenging terrain.
Terracing not only helps in maximizing arable land but also mitigates soil erosion and improves water retention, enhancing crop yields. The creation of terraces allowed the Incas to transform their environment into productive agricultural zones, which is crucial for a farmer in a mountainous region.
Other Options Explained
- Trephination was an early surgical practice and not relevant to agriculture.
- A quipu was a counting tool, used for record-keeping, not directly related to cultivation.
- A chaski served as a messenger, important for communication but not for farming techniques.
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