The correct answer is: d) All of the above.
Minor irrigation schemes in Assam include shallow tube wells, lift irrigation projects, and small reservoirs.
Shallow tube wells are a type of irrigation system that uses a pump to draw water from a shallow aquifer. They are a common type of irrigation system in Assam, and they are used to irrigate a variety of crops, including rice, wheat, and vegetables.
Lift irrigation projects are a type of irrigation system that uses a pump to lift water from a lower elevation to a higher elevation. They are used to irrigate areas that are not easily accessible by canals or other surface water sources.
Small reservoirs are a type of irrigation system that uses a dam to store water. The water is then released from the dam through a canal or pipe to irrigate crops.
All of these types of irrigation schemes are important for agriculture in Assam. They help to increase crop yields and improve the livelihoods of farmers.