The correct option is D In 1981, ‘Bhaskara-2’ was launched with the help of the Soviet Union.
India launched a remote sensing experimental satellite, Bhaskara-1 with the help of the Soviet Union in 1979 . It aimed to observe various things on the surface of the earth through remote sensing technology. The satellite collected information regarding water bodies, mineral deposits and can be useful in forecasting weather conditions. The information from this satellite was useful in oceanography as well. In 1981, ‘Bhaskara-2’ was launched, also with the help of the Soviet Union.