To answer this question, you need to understand what Jantar Mantar is.
Option A) An Astronomical Observatory - This option is correct. Jantar Mantar is indeed an astronomical observatory. It is a collection of architectural astronomical instruments built by Maharaja Jai Singh II of Jaipur in the 18th century. These instruments were used to observe and study celestial objects, measure time, and calculate various astronomical parameters.
Option B) A Museum - This option is incorrect. Jantar Mantar is not a museum. While it does attract tourists and visitors, it is primarily an astronomical observatory.
Option C) A Fort - This option is incorrect. Jantar Mantar is not a fort. It is a collection of astronomical instruments and structures used for astronomical observations.
Option D) A Mughal Garden - This option is incorrect. Jantar Mantar is not a Mughal garden. It is an astronomical observatory.
The correct answer is Option A) An Astronomical Observatory. This option is correct because Jantar Mantar is a collection of architectural astronomical instruments used for observing and studying celestial objects.