Explanation:
The correct answer is option 'B', Buckingham Canal, which is not used for irrigation.

Buckingham Canal:
The Buckingham Canal is a man-made navigation canal that was constructed in the 19th century in South India. It was built by the British East India Company to connect Chennai (formerly known as Madras) with the Kaveri River. The primary purpose of the Buckingham Canal was to provide a transportation route for goods and people.

Other Canals:
The other three options mentioned in the question are all used for irrigation purposes.

Indira Gandhi Canal:
The Indira Gandhi Canal, also known as the Rajasthan Canal, is one of the largest irrigation canals in India. It was constructed in the state of Rajasthan to provide water for irrigation in the arid regions of the Thar Desert. The canal draws water from the Harike Barrage in Punjab and supplies water to various districts in Rajasthan.

Western Yamuna Canal:
The Western Yamuna Canal is a major irrigation canal in the state of Haryana, India. It is a branch canal originating from the Yamuna River near the Tajewala Barrage. The canal provides water for irrigation to the agricultural fields in the districts of Yamunanagar, Kurukshetra, and Kaithal.

Upper Ganga Canal:
The Upper Ganga Canal, also known as the Nahar, is a canal in the state of Uttar Pradesh, India. It was constructed to divert water from the Ganges River for irrigation purposes. The canal is one of the oldest and longest in the world, stretching over 350 kilometers. It provides water for irrigation in the districts of Haridwar, Bijnor, Meerut, and Ghaziabad.

In summary, while the Buckingham Canal was primarily built for navigation purposes, the other three canals mentioned in the question - Indira Gandhi Canal, Western Yamuna Canal, and Upper Ganga Canal - are all used for irrigation in their respective regions.