The Gandak Project is a multipurpose project in Bihar that provides:

Irrigation
Hydropower generation
Navigation
All of the above

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

The Gandak Project is a multipurpose project in Bihar, India. It was constructed on the Gandak River, which is a tributary of the Ganges River. The project was completed in 1962 and has three main objectives: irrigation, hydropower generation, and navigation.

The irrigation component of the project provides water for irrigation to about 1.2 million hectares of land in Bihar and Uttar Pradesh. The hydropower generation component of the project has a capacity of 100 MW. The navigation component of the project has made it possible for large ships to travel from the Bay of Bengal to Patna, the capital of Bihar.

The Gandak Project has had a significant impact on the people of Bihar. It has helped to increase agricultural production, improve transportation, and provide jobs. The project has also had some negative impacts, such as the displacement of people and the loss of biodiversity. However, overall, the Gandak Project has been a positive force for development in Bihar.

Here is a brief description of each option:

  • Irrigation: Irrigation is the process of providing water to crops to help them grow. The Gandak Project provides water for irrigation to about 1.2 million hectares of land in Bihar and Uttar Pradesh.
  • Hydropower generation: Hydropower is a form of energy that is generated by the flow of water. The Gandak Project has a hydropower generation capacity of 100 MW.
  • Navigation: Navigation is the process of moving ships and boats on water. The Gandak Project has made it possible for large ships to travel from the Bay of Bengal to Patna, the capital of Bihar.