How did Indus River Valley civilizations use irrigation techniques? Farmers used irrigation to protect fields from land overuse. Farmers used irrigation to offset flooding and protect crops. Famers used irrigation to manage the water supply for crops. Famers used irrigation to create land for better roads and houses.

C. Farmers used irrigation to offset flooding and protect crops.

Explanation:

The Indus River Valley civilization also known as the Harappan civilization was a period of that spanned through the bronze age. The people during this time were known to have invented a unique writing style. Today, this region is located around Pakistan and the Western part of India.

The farmers at the time, also practiced irrigation of crops. Times of flooding were monitored before irrigation. Irrigation was also geared at protecting and nurturing the growth of their crops.