Correct Answer:
Option A - Sawai Jai Singh, Maharaja of Amer and Jaipur constructed five observatories in the eighteenth century in the North Indian cities Delhi, Jaipur, Ujjain, Mathura, Varanasi.
A. Sawai Jai Singh, Maharaja of Amer and Jaipur constructed five observatories in the eighteenth century in the North Indian cities Delhi, Jaipur, Ujjain, Mathura, Varanasi.