The correct answer is option 'A' - Indira Gandhi Canal.

The Indira Gandhi Canal is known for its extensive canal network and water supply to the Bannu region in Pakistan. It is one of the largest canal projects in India and is named after the former Prime Minister of India, Indira Gandhi.

Here is a detailed explanation of the Indira Gandhi Canal project:

1. Introduction:
The Indira Gandhi Canal, previously known as the Rajasthan Canal, is a major irrigation project located in the northwestern part of India. It was initiated to address the water scarcity issues in the arid regions of Rajasthan and Punjab.

2. Construction and Canal Network:
The construction of the canal began in 1958 and was completed in 1987. The canal stretches over a distance of around 650 km and is fed by the waters of the Sutlej River. It starts from the Harike Barrage in Punjab and passes through the states of Punjab, Haryana, and Rajasthan.

The canal network of the Indira Gandhi Canal project includes the main canal, distributaries, and minors. The main canal has a length of about 445 km and is designed to carry a discharge of 1,000 cubic meters per second.

3. Water Supply to Bannu Region, Pakistan:
One of the significant aspects of the Indira Gandhi Canal project is its provision for water supply to the Bannu region in Pakistan. The canal passes through the border areas of Rajasthan and enters Pakistan near the village of Hussainiwala. From there, it provides water to the Bannu region in Pakistan.

4. Benefits:
The Indira Gandhi Canal project has brought several benefits to the regions it covers:

- Irrigation: The canal has played a crucial role in transforming the arid regions of Rajasthan and Punjab into fertile agricultural lands. It has provided irrigation facilities to millions of hectares of land, enabling farmers to grow crops and increase agricultural productivity.

- Drinking Water Supply: The canal has also facilitated the supply of drinking water to the people living in the regions it passes through. It has helped in addressing the water scarcity issues and improving the quality of life for the local population.

- Hydroelectric Power Generation: The project has also led to the development of hydroelectric power stations along the canal. These power stations generate electricity by utilizing the flow of water in the canal, contributing to the overall energy requirements of the region.

In conclusion, the Indira Gandhi Canal project is known for its extensive canal network and water supply to the Bannu region in Pakistan. It has played a crucial role in irrigation, drinking water supply, and hydroelectric power generation, bringing significant socio-economic benefits to the regions it covers.