The correct answer is: d) All of the above.
Arunachal Pradesh is a state in north-eastern India. It is the largest state in India by area, but has the lowest population density. The state is mountainous and has a tropical climate. The main sources of irrigation in Arunachal Pradesh are rivers and streams, groundwater, tanks and ponds.
Rivers and streams are the most important source of irrigation in Arunachal Pradesh. The state has a number of rivers, including the Brahmaputra, the Dibang, the Lohit, and the Siang. These rivers are used to irrigate crops such as rice, maize, and wheat.
Groundwater is also an important source of irrigation in Arunachal Pradesh. The state has a number of aquifers, which are underground layers of rock that contain water. Groundwater is used to irrigate crops such as rice, maize, and vegetables.
Tanks and ponds are also used to irrigate crops in Arunachal Pradesh. Tanks are artificial reservoirs that are used to store rainwater. Ponds are natural or artificial bodies of water that are used to store water. Tanks and ponds are used to irrigate crops such as rice, maize, and vegetables.
In conclusion, the main sources of irrigation in Arunachal Pradesh are rivers and streams, groundwater, tanks and ponds.