The correct answer is: A. a-3, b-2, c-4, d-1
List I:
* Nangal Project: A multipurpose project on the Sutlej River in Punjab, India. It was completed in 1954. The project includes a dam, a power station, and a canal system.
* Loharu Project: A multipurpose project on the Ghaggar River in Haryana, India. It was completed in 1964. The project includes a dam, a power station, and a canal system.
* Dadupur Project: A multipurpose project on the Yamuna River in Haryana, India. It is under construction. The project includes a dam, a power station, and a canal system.
* Ottu Dam: A dam on the Yamuna River in Haryana, India. It was completed in 1978. The dam is used for irrigation and flood control.
List II:
* Sirsa: A city in Haryana, India. It is located on the Sutlej River.
* Bhiwani: A city in Haryana, India. It is located on the Ghaggar River.
* Ambala: A city in Haryana, India. It is located on the Yamuna River.
* Yamunanagar: A city in Haryana, India. It is located on the Yamuna River.
The correct match is:
* a-3, b-2, c-4, d-1
* Nangal Project: Sirsa
* Loharu Project: Bhiwani
* Dadupur Project: Ambala
* Ottu Dam: Yamunanagar