The answer is European style. Bichitr is a mughal painter whose works were inspired by European art. It is evident in the portrait of Jahangir which was allegorically presented with the hourglass throne. The one in the portrait has a vibrant halo with the blend of the shining sun and glowing moon. This represents Jahangir as the center of the universe.
It is named after the tympani. Typically used in orchestral performances.
What was your relfection or insperati0on for this fine art work.
I'd say the fourth option is the answer. It sounds the most sensible.
(I'm sorry if I'm wrong)
