The correct answer is (a) West Bengal.
The Mayurakshi Multipurpose Project is a hydroelectric project located on the Mayurakshi River in the state of West Bengal, India. The project was commissioned in 1956 and has a installed capacity of 120 MW. The project provides irrigation to over 100,000 hectares of land and also generates electricity.
The Mayurakshi River originates in the Chhotanagpur Plateau in Jharkhand and flows through the states of West Bengal and Bihar before joining the Bhagirathi River in West Bengal. The river is a major tributary of the Ganges River.
The Mayurakshi Multipurpose Project consists of a dam, a power station, and a canal system. The dam is located on the Mayurakshi River near the town of Mayurakshi in West Bengal. The power station is located downstream of the dam and has an installed capacity of 120 MW. The canal system is used to irrigate over 100,000 hectares of land in West Bengal.
The Mayurakshi Multipurpose Project is a major source of irrigation and electricity in West Bengal. The project has also had a significant impact on the socio-economic development of the region.
The other options are incorrect because the Mayurakshi Multipurpose Project is not located in those states.