The correct option is D The USSR supported India at the UN during the liberation of Goa in 1961.
After India's independence, the USSR invested in heavy machinery, mining, and energy production sectors. Bhilai Steel Plant and Bokaro Steel Plant were set up with their help. It also helped India setup heavy industries project and established IIT Bombay. The USSR also supported India at the UN during the liberation of Goa in 1961. In 1971 India and Soviet Union signed the Treaty of Peace, Friendship and Cooperation and emphasised on maintaining global peace and security..
The Rourkela Steel Plant was set up in collaboration with Germany, while the Durgapur Steel Plant was set up in collaboration with the United Kingdom.