The correct answer is (a) Russia.
Bhilai Steel Plant is a steel plant located in Bhilai, Chhattisgarh, India. It is the largest integrated steel plant in India and one of the largest in the world. The plant was established in 1955 as a joint venture between the Government of India and the Soviet Union. The plant has a production capacity of 13 million tonnes of steel per annum.
The plant was built with the help of Soviet technical assistance and equipment. The first blast furnace was commissioned in 1959 and the plant was fully operational by 1962. The plant has been expanded several times since its inception.
The plant is a major supplier of steel to the Indian market. It also exports steel to a number of countries around the world. The plant is a major employer in the region and is a significant contributor to the Indian economy.
The other options are incorrect because they are not countries that have collaborated with the Indian government on the Bhilai Steel Plant.