The correct answer is: A. Mahatma Gandhi Setu.
The Mahatma Gandhi Setu is a bridge constructed over the Ganges river in India, connecting the cities of Patna and Hajipur in the state of Bihar. It is the longest bridge in India and the second longest river bridge in Asia. The bridge was opened in 1986 and is named after Mahatma Gandhi, the father of modern India.
The Hirakud Dam is a concrete gravity dam on the Mahanadi River in the Indian state of Odisha. It is the second largest dam in India, after the Bhakra Dam. The dam was built between 1948 and 1962 and is used for irrigation, hydroelectric power generation, and flood control.
The Gopalgunj Bridge is a bridge constructed over the Ganges river in India, connecting the cities of Gopalganj and Chhapra in the state of Bihar. It was opened in 2016 and is the longest bridge in Bihar.
The answer to the question is A. Mahatma Gandhi Setu.