The correct answer is option 4, the Sardar Sarovar Project.

Option 1, the Indira Gandhi Canal, is a major irrigation project in Rajasthan, India. While it is one of the longest canals in the world, it is not entirely lined.

Option 2, the Nangal Hydel Channel, is a canal in Punjab, India. However, it is not the longest entirely lined irrigation canal.

Option 3, the Tungabhadra Left Bank Canal, is a canal in Maharashtra and Karnataka, India. Like the other options, it is not the longest entirely lined irrigation canal.

The Sardar Sarovar Project, located in Gujarat, India, has the distinction of being the world`s longest entirely lined irrigation canal. It provides water for irrigation to various regions in Gujarat and neighboring states.