Traditional irrigation systems using small reservoirs are called:

The correct answer is: d) All of the above.

Eris, Ooranis, and Kuttais are all traditional irrigation systems using small reservoirs.

Eris are small reservoirs that are built on hilltops to collect rainwater. The water from the eris is then used to irrigate crops.

Ooranis are small canals that are built to carry water from rivers or streams to fields. The water from the ooranis is then used to irrigate crops.

Kuttais are small tanks that are built to store rainwater. The water from the kuttais is then used to irrigate crops.

Traditional irrigation systems using small reservoirs are an important part of agriculture in many parts of the world. They provide a reliable source of water for crops, even during periods of drought.