The correct answer is: A. Aryabhatta
Aryabhata was the first Indian satellite, launched on April 19, 1975. It was named after the Indian mathematician and astronomer Aryabhata. The main function of Aryabhata was to perform X-ray experiments in space and send back data to Earth. It was also used to study the Earth’s atmosphere and to test new technologies for future satellites.
Bhaskara II was an Indian mathematician and astronomer who lived in the 12th century. He is best known for his work on trigonometry and astronomy. Bhaskara II’s work was highly influential in India and Europe.
Bhaskara IL was an Indian satellite launched on September 20, 1999. It was named after the Indian mathematician and astronomer Bhaskara II. The main function of Bhaskara IL was to study the Earth’s atmosphere and to test new technologies for future satellites.
None of the above is the correct answer because it does not include Aryabhatta, the first Indian satellite that had a main function to perform X-ray experiments in space and send back data to Earth.