Option 1: Ajit Singh is not the correct answer. There is no historical evidence to suggest that Ajit Singh, a Rajput ruler, drew up a set of tables called Zij Muham-madshuhi for astronomical observations.

Option 2: Raj a Sawai J ai Singh is the correct answer. He was a Rajput ruler who is known for his contributions to astronomy. He drew up a set of tables called Zij Muham-madshuhi, which enabled people to make astronomical observations. These tables were based on the works of Muhammad Shah, a renowned astronomer.

Option 3: Bhara Mai is not the correct answer. There is no historical evidence to suggest that Bhara Mai, a Rajput ruler, drew up a set of tables called Zij Muham-madshuhi for astronomical observations.

Option 4: Man Singh is not the correct answer. There is no historical evidence to suggest that Man Singh, a Rajput ruler, drew up a set of tables called Zij Muham-madshuhi for astronomical observations.

Overall, the correct answer is option 2, Raj a Sawai J ai Singh.